Question

1. List three real-life examples of a physical change and justify your answer by explaining why it is physical rather than chemical.

a.

b.

c.


2. List three real-life examples of a chemical change and justify your answer by explaining why it is chemical rather than physical.


a.

b.

c.

Answer 1

1A) Breaking a glass
1B)Crushing a can
1C) Chopping wood

2A) Baking a cupcake
2B) Digestion of food
2C) Mixing an acid and a base ( for example Baking soda and Vinegar)

Best way to Know if its physical or chemical:

Can you reverse the changes (Not all physical changes are completely reversible)

Any color changes (with a few exceptions) bubbles forming or as precipitate? if you say yes to that then its a chemical change


Is the identity of the ending result aka final product the same before the changes? if yes then its a physical change; no then a chemical

Answer 2

1a. Cutting paper

1b. Coloring paper

1c. Folding paper

These are physical changes because they do not change the kind of matter or create a new substance property

2a. Dissolving sugar

2b. Burning paper

2c. Boiling water

These are chemical changes because they change the kind of matter or create a new substance property

Explanation:

Also this is a science question