Determine whether the events listed below during the baking process are indicators of a physical change or chemical change.

Question

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Column A
1.
heating up the oven:
heating up the oven
2.
Chocolate chips melting:
Chocolate chips melting
3.
Ingredients combine (flour, salt, sugar, milk, etc.) to make the cookies:
Ingredients combine (flour, salt, sugar, milk, etc.) to make the cookies
4.
Smell of cookies wafting from the oven:
Smell of cookies wafting from the oven
Column B
a.chemical change
b.physical change

Answer 1

1. Column A: b. physical change
2. Column B: a. chemical change

3. Column A: b. physical change
4. Column B: b. physical change

Answer 2

only 1 is right

Answer 3

1. Column A: b. physical change
2. Column B: b. physical change

3. Column A: b. physical change
4. Column B: a. chemical change