Question

Are the following examples of chemical or physical changes?

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

Answer 1

Sure! Here are the classifications for each example from Column A based on whether they are physical or chemical changes:

1. **Digesting lunch:** b (Chemical Change) - This involves breaking down food into its chemical components.

2. **Cutting your hair:** a (Physical Change) - This alters the length or appearance of the hair but does not change its composition.

3. **Crumbling up your snack wrapper:** a (Physical Change) - This changes the shape and form of the wrapper but not its chemical structure.

4. **Grilling chicken:** b (Chemical Change) - This process involves cooking the chicken, which alters its chemical composition through heat and the Maillard reaction.

So, the classifications are:
1. Digesting lunch - b
2. Cutting your hair - a
3. Crumbling up your snack wrapper - a
4. Grilling chicken - b