You are currently browsing the Just Only Blog blog archives for April, 2011


Chem 201: Study Session

This Wednesday, April 27th, we will have a study session that focuses on problem solving with special emphasis on the following worksheet: Colligative Properties.

The session will begin at 2:00 PM. I will check for new arrivals at 2:30 PM and at 3:00 PM. I hope to see your there.

Also, because Chapter 14 is so desciptive, I am suggesting you go over the following questions to see if you can figure out the answers. The correct answers will be posted in a few days.

Representative Elements

1. What are the products of the following reaction of strontium hydride and water?

 SrH2(s) + H2O(l) → 
A. Sr2+(aq) + H2(g) + O2(g)                            B. Sr2+(aq) + H2(g) + OH-(aq)
C. Sr(s) + H2(g) + OH-(aq)                             D. Sr(s) + H3O+(aq)
E. None of these choices is correct. 

2. The elements from Groups 1A(1) and 2A(2) are 
A. strong acids.                       B. strong bases.                                   C. amphoteric.
D. strong oxidizing agents.     E. strong reducing agents. 

3. Predict the products for the reaction of the following set of reactants.

 BaO(s) + CO2(g) → 
A. BaCO3(s)                B. Ba(s) + CO(g) + O2(g)                   C. BaO2(s) + CO(g)
D. Ba2CO3(s)              E. BaC2(s) + O2(g

4. Predict the products for the reaction of the following set of reactants.

 MgCO3(s) + heat → 
A. Mg(s) + CO(g)       B. Mg(s) + CO2(g)      C. MgO(s) + CO(g)    D. MgO(s) + CO2(g)   E. no reaction 

5. Which of the following oxides will be the most acidic? 
A. Al2O3             B. Ga2O3            C. In2O3              D. Tl2O3              E. None of these oxides is acidic. 

6. Which of the following oxides is most basic? 
A. As2O3            B. P4O10              C. Sb2O3             D. Sb2O5            E. NO2 

7. The chemical that ranks first in production among all industrial chemicals is 
A. NH3, ammonia.                  B. H3PO4, phosphoric acid.                C. NaOH, sodium hydroxide.
D. Na2CO3, sodium carbonate.                       E. H2SO4, sulfuric acid. 

8. The halogens are 
A. strong oxidizing agents.     B. strong reducing agents.                  C. strong acids.
D. strong bases.                       E. amphoteric. 

9. Predict the products for the following set of reactants.

 Cs(s) + Br2(l) → 
A. CsBr(s)       B. CsBr2(s)      C. CsBr(l)        D. CsBr2(l)      E. Cs2Br(s

10. Predict the products for the reaction of the following set of reactants.

 Ca(s) + H2(g) → 
A. CaH(s)        B. CaH2(s)       C. Ca2H3(s)     D. Ca3H2(s)     E. None of these choices is correct.

Noyes Schloarships for Future HS Teachers in Science

Dear City College Colleagues,

The Chicago State University Science Departments (Biology, Chemistry, and Physics) are now accepting applications for our 2011 Noyce scholarships. The Noyce Program is a National Science Foundation Program that encourages students to enter the High School Science Teaching Profession. The Scholarships provide students with full tuition for typically up to two years and provide a stipend to help defray the cost of living. In addition, scholars have the option of participating in internships at CSU or at partner institutions such as the Adler Planetarium and the Museum of Science and Industry. Scholars also travel around the country to participate in science education conferences. Last month five of our Noyce Scholars attended the National Association of Science Teachers Meeting in San Francisco.

If you have students interested in the CSU Noyce Program they can apply at: http://www.surveymonkey.com/s/csunoyceapp. The deadline is May 1st.
For freshman and sophomores who are not committed to teaching but are considering entering the field we also have a Noyce Internship Program so that they can make an informed decision about whether science teaching is right for them. To apply for the Noyce Internship Program students can submit their application at: http://www.surveymonkey.com/s/csunoyceinternship
More information about the Noyce Program can be found at: http://www.csu.edu/chemistryandphysics/scienceed/noyce/
Posted from an email sent by:
 
Mel Sabella
Associate Professor of Physics
Chicago State University

IIT Schloarships – 100 Presidential Scholarships – 6/15 deadline

Science and Psychology, Technology, Engineering, and Math, and Business and Architecture

$23,500 plus $5,000 housing stipend plus up to $5,000 Research and
up to $17,000 for other Transfer Students.
 

I am writing to encourage you to spread the news about 100 Presidential Scholarships for CCC students. I just received an email from IIT – a ‘few’ applications are trickling in.

From the CCC Home Page, see the press release when you click on ’The News From the Colleges’ : http://www.ccc.edu/Files/CCC_IIT_Presidential_Scholarships.pdf

Find details from the home page, click on ‘Students’ on the Top and then ‘Financial Aid’ on the left. Next click ‘Scholarships’ to go here:  http://webapps.ccc.edu/fund/viewname.jsp

Gardening: Carrot Tops

A few days ago I looked in my refrigerator and found out my carrots had grown roots! I could have thrown them away but with vegetable planting coming up soon I decided to cut off the tops and put them in water and here they are today:

Carrot Tops

Carrot Tops

This is easier than starting carrots from seeds and quicker too. If you try this be sure to change the water every couple of days. These could be planted in moist soil any time.

Gardening: Composting

The composter arrived in a zillion pieces. Today’s project was to put it together and put some garbage in it with the hope that some day it would turn into fertile garden soil.

Do It Yourself Composter

Do It Yourself Composter

The directions came in three languages but were difficult to make out in all of them. Nevertheless the best approach to problem solving is step by step and that is what I did. I even checked off each step as I did it so I wouldn’t get lost. When I bought this thing the seller didn’t tell me I needed a socket wrench and a big drill. I had to make do with adjustable wrenches and a portable drill. The screws were so hard to turn that the charge was used up quickly and I had to keep recharging the drill. This was frustrating.

Lots of Pieces

Lots of Pieces

When the composter arrived in its box I took everything out and arranged all the pieces in front of me. It is important to be organized. I like to spread out all the parts so I can see everything at once. (That’s true when I solve chemistry problems too – I need to have space to think.) The entire time I worked on this project Thor stayed close. You can see him sitting by the little pile I’ve gathered to toss into the composter. I imagine he is wondering what I’m doing with all this strange looking stuff.

A Skeptic

A Skeptic

It turned out that putting this composter together was a very long process. The frame went together well enough but I broke a drill bit trying to start holes for the screws – then I found out that the screws had ends like little drills and didn’t need any starter holes. About now you may be wondering what a composter is exactly. It’s a good question.

The Composter Stand

The Composter Stand

Soil fertility is essential when growing food crops and each crop leaches nutrients from the soil so there has to be a way to put them back. When we chop vegetables, make coffee, crack open eggs we put lots of food in the garbage and this debris is full of nutrients but if you just went outside and dumped them on your garden you would attract flies and maggots. Yuck. So you need a container that will allow air in but keep the compost warm and out of sight as it decays. When we rake leaves, cut grass and collect newspapers we are gathering valuable organic nutrients that can be returned to the soil instead of sent to a landfill.

Sides are Attached

Sides are Attached

This composter is a sturdy container built on a stand so that it will be possible to turn it. Turning the composter allows all the ingredients to mix well speeding up the decomposition processes. The black color of the composter will soak up radient energy. The inside of this composter will get pretty warm. We can measure it in a week or two and you’ll see what I mean.

Four Sides and the Mixing Bar
Four Sides and the Mixing Bar

Materials that can go into a composter are divided loosely into two categories: brown and green. Brown ingredients are rich in carbon. They are also stocky and coarse. They include brown leaves and brown grass, woody stalks of plants like sunflowers, paper and wood products, twigs, newspaper, dryer lint!! Green materials are richer in nitrogen. These are kitchen scraps such as vegetables, melon rinds, eggshells, fruit, tea bags, coffee grinds, green leaves and fresh grass clippings. Overall you need to put in a lot more brown materials compared to green materials to maintain a healthy mix for ideal decay and soil formation.

Compost Ready to Mix

Compost Ready to Mix

Composter At Work

Composter At Work

I think it is very cool that stuff I usually throw away will become useful. I know it takes time and won’t happen overnight. There is also some work involved. This mixture needs to be turned regularly for best results. This composter is easy to spin even when it is full. I’ve put it in a shady corner of the yard in an area where nothing grew last summer.I decided to fill in the space with marble rocks. I haven’t given up on the idea of having something grow around the composter but for now this will do.

Thor isn't Convinced

Thor isn't Convinced

Thor watches the entire four hour ordeal as I put the composter together and now that he sees it he doesn’t know what to make of it. He’s ready to take a walk and he’s letting me know that he’s been more than patient. Perhaps he’ll be pleased when he sees the fresh, black soil coming out of the container. It won’t look at all like the materials that went into the composter. It won’t smell bad either. If the composter does its job it will produce a rich loam that will nourish the food crops well.

Gardening: Seeds

Today it is cold and damp but I have all this energy and I want to do something in my garden. There is a great indoor activity; planting seeds. It is possible to start plants indoors before the last frost and then move them to your garden. Seeds costs less than actual plants but it takes patience to grow them. It is fun to collect seeds. They come in so many sizes and shapes. Little bottles used to store beads are great containers for seeds.

Seed Collection

Seed Collection

Seeds lose potency over time and some plants don’t produce very viable seeds so you will have to experiment. I noticed there are even seed survival kits for sale now - non-hybrid seeds that will keep the world going after who knows what happens. Seeds really are amazing. Add a little water and they come to life.

Seeds of all Kinds

Seeds Come in Different Sizes and Shapes

I am always pleased when I can recognize a seed. Beans and peas are easy to identify. I can also spot sunflower seeds because I’ve eaten them before. I label the seed packages and put them all in a zip lock bag in case I need to refer to them at some point. I also label the bottoms of these containers. That way I can look up a seed’s identity. I could store the seeds in their original packets but this way I can look at them all together.

To grow them it works best to put them in potting soil in a peat pot. When it is time to move them outside you just put the entire pot into the ground and it will disintegrate. It takes about ten days for little seedlings to appear.

Sprout

Sprout

It is important not to let the seed dry out during this time. The seed hull is often tough and the little plant has to break out of it. It helps if it is softened by moisture. You should plant more than one seed in a pot. It is all about survival of the fittest. You can select the strongest plants for your garden.

Seedlings

Seedlings

Sunflowers are especially fun to sprout because they are no sooner out of the earth and they began to gyrate – looking towards the sun. They grow quickly. These sunflowers are about two weeks old.

Sunflowers

Sunflowers

I put all the little seed pots on a tray and carry them outside on nice days and bring them inside when the weather is too cold or too stormy. Every day they look a little bigger. This is a great activity for the rainy month of April.

Gardening: Rain Barrel

Fresh water is a natural resource and essential to life. Everyone knows that. Living near a Great Lake gives me a lot of comfort – lots of fresh water. But I think it would be very cool if I could collect my own fresh water – from rain. I found out about rain barrels and thought having this stored water on hand could be very interesting. I could test the water and determine its pH. It won’t have chlorine added to it. I don’t plan to drink it but I think it may be just right for my garden. Normally water that falls on the roof flows through a downspout and is delivered to one spot – if the rain is heavy this spot can flood. I picked out a place to install my rain barrel.

An Unattractive Downspout

An Unattractive Downspout

This particular downspout bothers me. Thor is always stepping on it and it is laying across the area where I am trying to grow flowers. I decided this was the best place to but a rain barrel. I ordered one and it arrived on a rainy day. It seemed to make sense – get the rain barrel out there and put it to work right away.

Rain Barrel

Rain Barrel

I had to remove part of the downspout and rearrange the curved pieces but when I finished the rain dropped right into the barrel. This barrel stores 65 gallons of water. If I use this water regularly I should have a nice source of fresh water on the driest days. There are two ways to remove water from the barrel: a spigot on the side and a hose that is attacted to very bottom side of the barrel. Rain barrels come in lots of sizes and styles. This one is made of plastic and was very easy to move into place. There was a little moment of shame: taking off the pieces of downspout shows that there is paint missing from the area behind it. Oops. Well that can easily be fixed. The bowl on top of the rain barrel may be used as a bird bath or as a planter. I decided to fill it with soil and put in some Nasturtium seeds. Nasturtium flowers and leaves are edible. They give a peppery punch similar to watercress in salads and pasta dishes.

Nasturtium Seeds

Nasturtium Seeds

I covered these seeds with one half inch of soil. I used organic potting soil to plant these seeds. If they are going to be eaten it is important not to use any pesticides. Growing an edible plant converts this space into usable space for food.

Rain Barrel Filter

Rain Barrel Filter

This is a view down the opening in the rain barrel. You can see that a filter is used to trap any debris that may come through the downspout. This filter will need to be checked and cleaned as needed.

Water Streaming

Water Streaming

Because it was raining when I placed this barrel in the yard it went right to work filling up with water. I think this was a lucky situation because the barrel is much less likely to tip over if it has some water in it to add weight to the bottom. I plan to add a flexible piece to the downspout to direct the water into the barrel more efficiently.

Rain Barrel

Rain Barrel

I am very excited to have a rain barrel. Oh and in case you are wondering what happens if the rain barrel fills up to the top – there is an overflow hole in the back that lets water drain out when it reaches a certain level. I’m going outside right now and see how much water is in the barrel.

Gardening: Bulbs

I don’t know anything about bulbs except that at the end of a long winter the daffodils and tulips pop up first. I’ve planted tulips and daffodils along this wall. Last summer we painted this garage. We still need to finish the windows and it needs a new roof. I suspect the old paint that we stripped off of the garage was lead based. If it was then the soil might be contaminated. I plan to test this soil for lead – and I won’t be growing edible plants here.

Flowers from Bulbs

Flowers from Bulbs

There is actually a process that uses plants to clean up soils: phytoremediation. The idea is to grow plants that accumulate heavy metals and then dispose of the plants responsibly. I will be learning more about this too. There really is a lot of chemistry that can be learned while gardening.

The downspout is rather unattractive and doesn’t really deliver the water to the ground in a useful way. I’ll be putting a rain barrel here. A rain barrel collects the rain and stores the water so it will be available during drier days.

Gardening: Mulch

I decided it was a waste of time to try to grow so much grass. Thor loves to dig and, well to confess, he isn’t always taken out of the yard to do his business so the grass is under constant assault. This photo looks over the fence at my neighbor’s yard. Last summer so many mushrooms popped up in this area. There is a burried tree stump a little to the left of the tree. This is where I gathered a cup of soil and sent it off to the laboratory for testing. I learned the soil is heavy (lots of clay), full of nutrients, and very alkaline. The lab suggested I add urea. Funny, I think Thor is taking care of that.

Shade and Mulch

Shade and Mulch

I used pine bark, rather chunky pieces. There’s a little forsythia bush on the far left. This area is mostly shady. It is also bordered by the fence that separates Thor and Sid. Thor loves to run and jump around in this area. I’m thinking about trying to grow some honeysuckle on the fence. Those patches of green are what’s left of the grass.

Gardening: A Green House

Place for a Greenhouse

Place for a Greenhouse

Last summer I tried to grow lettuce. The rabbits ate all of it. I’m pretty sure they enjoyed it too. I grew beets successfully but then I wondered what kind of soil they were living in. The more I thought about the problems I had the more I wanted to try something new: a greenhouse. Well this summer I’m going to build one and learn how to use it.

The greenhouse I’ve bought is made of plastic and comes in panels that snap together. It measures 6 feet by 8 feet. I’ll be building it soon!

Gardening: The Pond Problem

Last summer one of my sons decided he would build a pond in our backyard. He did a beautiful job with the landscaping but a few problems occurred; first the pond liner was no match for Thor’s sharp toe nails. He punctured the lining twice and each time we had to start over. This year it will be different. We have new ideas.

The Pond

The Pond

This is our starting point for this year. It’s not too bad. The poor Japanese Maple tree lost most of its branches during the one foot snow fall we had this winter. The snow covered the tree and Thor loved to climb on the snow hill and look over the fence.

Lots of Snow

Lots of Snow

 

The biggest job, digging the hold, is done. Notice the flagstones along the left side of the pont. These help keep the soil in place. This would be a good place to grow a ground cover that loves to creep around rocks. That’s what I’ll be researching for this area. The convoluted twiggy thing on the right is a Wisteria plant. It will grow all over the trellis making this a shady area.

Canopy Over the Pond

Canopy Over the Pond

In front of the canopy I’ve nailed up a couple of old trellises. I haven’t decided what should climb up these rails but I have planted a couple of columbine plants with yellow-pink flowers. They won’t climb the trellis so there is still room for a climber to share this space.

In front of these plants another triangle is taking shape – this is a sunny area where berries will grow. Berries are very expensive to buy in the grocery store but they grow like weeks on the right kind of soil. Berries like soil that drains well and isn’t too alkaline. I have rasberries and blueberries growing here.

Berries are Food

Berries are Food

It should be possible to fit in a couple of herbs here too. I’m considering thyme or chamomile.

Gardening: Herbs

I love herbs! I love the scents, the lore, how well they grow with so little effort. I knew I wanted my garden to have lots and lots of herbs. There are so many to choose from – so I decided to start with the ones I use most in cooking: parsely, basil, cilantro, rosemary and parsely. I already had some chives growing in the yard. I decided to move them into my first project – a triangular herb garden.

Herb Garden

Raised Triangular Herb Garden

I’d been reading that in urban areas it is generally safer to build raised gardens and use transported soil. I used old bricks (not hard to find in Chicago) and some larger stones and built an area in a sunny corner of my yard. Herbs need lots of sun. I decided to add some vertical supports and see if I could grow peas and beans too. These vegetables love to climb. Notice that there is still a lot of space between the plants. Plants grow! The space will be filled in.

Mulch in an Herb Garden

Mulch in an Herb Garden

Adding mulch helps the soil retain moisture and protects the young plants. Herbs are hardy and don’t need much pampering. The biggest challenge is not to harvest the herbs too aggressively. Take small cuttings and use the herbs immediately.

Unexpected Snow in April

Unexpected Snow in April

The mulch also helps keep the plants warm if the weather turns cold. This snow occurred on April 18th, the first day of Spring Break. It melted quickly and provided lots of water to the young, thirsty plants.

Gardening: The Idea

I was reading books about climate change, about our relationship with food, about vertical farming and generally thinking about self-sufficiency. I wanted to do something positive. I have a big backyard. It occurred to me that I could grow food in it – my own little farm. This blog category will be a journal of my efforts.

Little Grass and Lots of Dirt

April 16th, Ground Zero

I’ve also created a new category “gardening”  in my bookstore to share some of the books that helped me think about what I wanted to do. Of course I want the results to be beautiful but also I want the results to be practical. Along the way I’ve been teaching myself about soil chemistry, herbal medicine, and food preservation (modern canning methods). I’ve been learning about what plants need to grow and be healthy. I’ve been especially interested in urban gardening – since I live in Chicago.

One of the biggest challenges to having a garden in my backyard is that I also have a very big dog who loves to help any way he can. If he sees me digging then he enthusiastically digs too. He’s burried bones all over the backyard. Bones are made mostly of calcium phosphate – a good mineral for the soil – so I shouldn’t complain, that is until he digs them up.

Sid and Thor: Big Dogs

Sid and Thor

My dog is the one on the right – he weighs about 125 pounds. The other dog belongs to my neighbor. She has a very nicely designed garden – her secret – don’t grow too much grass and use lots of mulch.

Chem 201: Osmotic Pressure

Humpty Dumpty and Alice

Humpty Dumpty and Alice

This experiment will take only a few minutes of your time, a couple of days to complete and will require an egg, a cup of vinegar and some water. You may also wish to perform a second part with corn syrup.

You will need an ordinary uncooked egg. Put it into a cup of ordinary vinegar overnight. This will dissolve the shell which is made of calcium carbonate. When the shell appears to be completely removed rinse the egg in water. You will need to handle it very gently. The membrane you have exposed is a semi-permeable membrane.

Carefully measure the egg’s diameter around the middle. Place the egg in a bowl and fill the bowl with fresh water. Leave the egg in the fresh water for 24 hours. You may place the bowl in the refrigerator if you wish. Measure the diameter of the egg around the middle again. What happened and why?

Variation: Use two eggs as near to the same size as possible. Remove the hard shells using vinegar as described above. Place one in fresh water and one in a solution made from 1/4 cup water and 3/4 cup corn syrup. What happened and why?

Send me your photos and I’ll post them.

Chem 201: Viscosity

Making Slime

Green Slime made from glue and borax and food coloring.

After enduring a challenging quiz about solutions and colligative properties students in Chemistry 201 were able to spend some time learning about viscosity and about non-newtonian fluids. We explored the properties of oobleck and slime. Oobleck, named after a story by Dr. Seuss: Bartholomew and the Oobleck is made from corn starch and water in a ratio of approximately 1:1.5 depending on the consistancy that is desired. Slime is a polymer made from glue (polyvinyl acetate) and borax and may be dyed with food coloring.

 

Monica found a way to record the formation of the oobleck by using her cell phone to record images as she stirred the solution. This is a reminder to all of us that there are creative ways to document observations in the laboratory.

Cell Phones in the Laboratory

Cell phones may be used to document change.

I believe we will be seeing more and more digital devices used in the laboratory in this way.

Looking at Slime

What is this stuff?

Students explored the physical property of viscosity – the resistance of a substance to flow and learned about sheer thickening and sheer thining (catsup) fluids. For some students this was a very novel experience. But there truly is no better way to learn about viscosity than to touch and hold these substances. Students also examined corn syrup at three different temperatures: cold (in an ice bath), room temperature and warm (on a hot plate set to low). They learned that temperature does affect viscosity.

 

Stretched purple slime

Stretched Purple Slime

Students have been learning about intermolecular forces, forces of adhesion and cohesion. We’ve discussed why water moves up a thin tube of glass (capillary action), why water beads up on wax but oil spreads out on water, and why temperature affects the states of matter. But there is no substitute for direct experience with goo!

 

Field Trip to Growing Power: An Urban Farm in Milwaukee

This was sent to me by Leone McDermott, the chair of our library department:

*********************************************************

FIELD TRIP TO GROWING POWER, AN URBAN FARM IN MILWAUKEE

Saturday, April 30
Depart from Truman at 11:30 a.m.
Return to Truman at 6:30 p.m.
$10 Tour entrance fee (payable in advance)
BYOL (Bring Your Own Lunch)

One Book, One Truman will culminate with a tour of Growing Power, an urban farm and community food center located in Milwaukee. The farm includes greenhouses, fish runs, beehives, hen houses, goats, turkeys, ducks, and more. Growing Power works not only for sustainable agriculture but also for community development through the promotion of equitable food access. The founder of Growing Power, Will Allen, received a MacArthur Fellowship in 2008 and was named one of the 100 most influential people in the world by Time Magazine in 2010. To learn more about Growing Power, visit its website at http://www.growingpower.org.

The event will last from about 11:30 a.m. until 6:30 p.m.; the farm tour itself will take 90 minutes. Transportation to and from Milwaukee will be via chartered bus. The only cost to participants is $10 for the tour entrance fee. People are required to bring their own lunches to eat on the bus, since there are no dining facilities at Growing Power.

Participation in this event is limited to 56 people from Truman’s students, staff, and faculty. If you would like to participate, please print and complete the attached sign-up and release forms. Return them with a $10 check made out to Truman College, with “Field trip” written in the memo line. You can send your completed forms and payment to Leone McDermott, Library, via college mail or give them to library staff members at the circulation counter or reference desk. If you have questions, please contact Leone at lmcdermott@ccc.edu or 773-907-4877.
******************************************

The two forms may be downloaded here:

Sign Up form
Release form

Chem 201: Harold Santamaria Demonstrates Air Bag Detonation

Air Bag Deployment

Harold Santamaria Discusses Air Bags

Automotive Technology Instructor Harold Santamaria visited our class today to demonstrate the deployment of an air bag. We learned that the explosive used is sodium azide and that the detonation takes place in the blink of an eye (30 ms). The reaction produces sodium vapor and nitrogen gas. The sodium is highly reactive and is converted to an oxide by reacting it with potassium nitrate. The reactions are highly exothermic. Watch the demonstration! and read more about the reactions involved.

Chem 201: Quiz Topics

Tomorrow’s quiz will cover the following topics:

Freezing point depression
Boiling point elevation
(i=1 for now – no van’t hoff factor questions).
molality

That’s enough for a short quiz.

Bonus Questions for Movie: Fresh

Please submit answers to the following questions to receive extra credit for watching the movie “Fresh”.

1. In your opinion, what is the main arguement for and against purchasing fresh, organically grown food?

2. In the movie the statement is made that eggs from the free range chickens are nutritionally better than the eggs from the chickens raised in cages. How would you test this statement?

3. Is fertilizer needed to grow food? Why or why not?

4. How were worms used in this movie?

Chem 121: Please take note of changes on syllabus

Today we will concentrate on the metathesis reactions laboratory. We will perform the laboratory about copper oxide next week. Also please note that all assignements, including the laboratory notebook, are due on May 1st. No late assignments will be accepted. If you are doing the extra credit worksheets for “Alchemy of Air” please note that the worksheets are also due May 1st.

Syllabus


Switch to our mobile site