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1. Indicate whether each of the following changes is a chemical or physical change. Explain why you answered as you did.

A. Leaves changing color in autumn
B. Crushing a dry leaf in your hand (Physical)
C. An aspirin dissolving in your mouth or stomach
D. An aspirin acting on the body to relieve a headache
E. Water boiling (Physical)
F. Beans cooking
G. Grass growing
H. Cutting grass
I. Bleaching clothes

2. Make a drawing of ten particles of water changing from a liquid to a gas. Indicate the motion of the particles.



Answer :

GinnyAnswer

Final answer:

Physical changes like boiling and melting involve no bond changes, while chemical changes show color variations and formation of new substances.


Explanation:

Physical: Boiling and melting are physical changes. No bonds are broken or formed.

Chemical: The dark grey nail changes color to form rust, indicating a chemical change.

Physical: When green mixture is combined with colorless solution, no properties change.

Chemical: Formation of a precipitate and color change indicate a chemical change.


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