Question

Question 4
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