Name: ___________________________________

Kitchen ChemistryDirections: Using the link below, watch a video about chemistry by Crash Course Kids. Then, answer the questions that follow. I have included the timestamp for each question in case you get stuck. https://www.youtube.com/watch?v=37pir0ej_SE

1) Baking is pretty much which field of science? (0:12)a) Biologyb) Physicsc) Chemistryd) Geology

2) Something made by combining two or more different things is called a… (0:35)a) Mixtureb) Solventc) Titrationd) Cordial

3) How is a chemical change different from a mixture? (1:03) ________________________________________________________________________________________________________________________

4) Which of these is NOT a sign of a chemical reaction mentioned in this video? (1:30)a) Production of lightb) Production of smellc) Releasing Gasesd) Production of solid substrate

5) Mixing together flour, sugar, milk, and eggs gives us what mixture? (2:05)a) Gelatinb) A Cakec) Cake Batterd) Cookie Dough

6) What must be done to cake batter in order to turn it into a cake? (2:10) ________________________________________________________________________________________________________________________

7) How do we know a gas was released while the cake baked? (2:51) a) There are no holes in the cakeb) There are small air pockets in the cakec) We can smell carbon dioxided) We can see carbon dioxide

8) Another kitchen chemical reaction you can think of is…. (Hint: think of something else you bake!) ______________________________________________________________________________________________________________________________________________

Part 2:Directions: Now that you’re a chemical reactions (and baking) expert, see if you can explain the before and after of these kitchen chemical reactions. In the “BEFORE” column, describe what the substance looks like before the reaction. In the “AFTER” column, describe what it looks like after. And in the “SIGNS” column, describe what changes you observed. You may use the Changes Word Bank Box to help you.

Changes Word BankChange in color production of smell production of gas

Change in temperature production of light production of solid substrate

Kitchen ChemistryREACTION BEFORE AFTER SIGNS

Frying an egg

Baking Chocolate Chip Cookies

Baking Flan