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Are the following examples of chemical or physical changes?

Column A
1.
Digesting lunch:
Digesting lunch
2.
Cutting your hair:
b
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

1 answer

Here are the classifications for the changes in Column A:

  1. Digesting lunch: a. Chemical Changes (This involves breaking down food into nutrients through chemical reactions.)
  2. Cutting your hair: b. Physical Changes (This change alters the length of hair but does not change its chemical structure.)
  3. Crumbling up your snack wrapper: b. Physical Changes (This involves changing the shape and size of the wrapper but not its chemical composition.)
  4. Grilling chicken: a. Chemical Changes (This involves cooking the meat, which leads to chemical changes in the proteins and other components.)

So the answers are:

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