Physical And Chemical Changes

Question 1

What are physical changes?

Answer 1

Physical changes include changing the appearance of a substance, such as grinding or dissolving.

Question 2

What is a key difference between physical and chemical changes?

Answer 2

A physical change does not create a new substance, while a chemical change does.

Question 3

What is a chemical change?

Answer 3

A chemical change, also called a chemical reaction, involves at least one new substance being formed.

Question 4

What is an example of a physical change?

Answer 4

An example of a physical change is dissolving sugar in water.

Question 5

What is an example of a chemical change?

Answer 5

An example of a chemical change is burning natural gas.

Question 6

Are chemical changes easily reversible?

Answer 6

Chemical changes are generally difficult to reverse.

Question 7

What are reactants?

Answer 7

Reactants are the substances that undergo a chemical change.

Question 8

What are products?

Answer 8

Products are the substances that are formed as a result of a chemical reaction.