Are the following examples of chemical or physical changes?

Question

examples
1. Digesting lunch
2. Cutting your hair
3. Crumbling up your snack wrapper
4. Grilling chicken
options
a.Physical Changes
b.Chemical Changes

Answer 1

Here are the classifications for your examples:

1. Digesting lunch - b. Chemical Changes
   (This involves breaking down food into nutrients, which is a chemical process.)

2. Cutting your hair - a. Physical Changes
   (This changes the length of the hair, but not its chemical composition.)

3. Crumbling up your snack wrapper - a. Physical Changes
   (This changes the shape and size of the wrapper but not its chemical structure.)

4. Grilling chicken - b. Chemical Changes
   (This involves cooking the chicken, which changes its chemical composition through the cooking process.)

So, the classifications are as follows:

1. b
2. a
3. a
4. b