Honors Chemistry Week 3

This is a great week we are going back in history. Only a few videos to watch.

We are looking at alchemy.

Vocabulary (know the definitions)

Day 1: Watch the Videos

What questions do you have from the earlier videos, try to find the answers to those questions
Watch: From Alchemy to Chemistry Object Theatre
- How does this video differ from what you heard in the earlier videos.

Stage 1
- Hopefully you have these materials at home
  - Flour
  - Baking soda
  - Baking powder
  - Butter
  - Sugar
  - Egg(s)
  - Vanilla
  - Salt
  - Raisins, nuts or chocolate chips
- You should recognize that these are the ingredients to make a cookie. The question is how much of each you should use.
  - Now some of you are going to cheat and you will be wasting the entire activity if you do.
  - So how about playing it straight and try to do this the way I tell you so you can really see the difference between alchemy and science?
- I would like you to make a batch of cookie dough without looking up a recipe.
  - You need to figure out how much of each ingredient to mix together.
  - You need to figure out the order, how hot the oven should be, how long you cook them for etc.
- Make sure to write your personal receipt down.
  - You might accidentally invent the next great cookie!
- This is how the alchemist of old worked out how stuff was made, no scientific method, no understanding of chemical reactions, just trial and error.
- Once you have a cookie try it and see how it turned out. Nothing here is poisonous so you’ll be OK.
- Save one to take a picture of.

Stage two
- Look up a receipt for your favorite cookie (oatmeal raisin is mine)
- Notice that the ingredients are very similar to what you used.
- Make a batch of cookies following the recipe.
- Try to find out the science of temperature on the sugar in the cookie.
  - You could also see what role the baking soda plays.
- Save a cookie to take a side by side picture with your personal cookie.

Submitting Assignment
- When you are done write up a short paper explaining what you learned from this activity and place the cookies on the bottom of the page.
- Take a picture and send it to: bartlett@wcskids.net
- Make sure to include your name, hour and week 3.

Make sure I get your work by next Saturday