Question 4

Question

Are the following examples of chemical or physical changes?

Column A
1.
Digesting lunch:
Digesting lunch
2.
Cutting your hair:
Cutting your hair
3.
Crumbling up your snack wrapper:
Crumbling up your snack wrapper
4.
Grilling chicken:
Grilling chicken
Column B
a.Chemical Changes
b.Physical Changes

Answer 1

Here are the classifications for the examples in Column A:

1. Digesting lunch: a. Chemical Change (This involves breaking down the food into nutrients through chemical reactions.)

2. Cutting your hair: b. Physical Change (This changes the length and shape of the hair, but does not alter its chemical composition.)

3. Crumbling up your snack wrapper: b. Physical Change (This alters the shape and size of the wrapper but does not change its chemical identity.)

4. Grilling chicken: a. Chemical Change (This involves cooking the chicken, which changes its chemical composition and creates new substances.)

So, the answers are: 1 - a 2 - b 3 - b 4 - a