Chapter 1 & 2

Question 1

Ammonia is an example of what type of substance?

Answer 1

Pure substance.

Question 2

How is matter represented?

Answer 2

In 3 levels. Macroscopic, microscopic and particulate.

Question 3

Name two compounds.

Answer 3

Salt, or NaCl, and Water H2O

Question 4

What are two differences between mixtures and compounds?

Answer 4

Mixtures are impure while compounds are not. Mixtures are separated by physical means and compounds are separated by chemical.

Question 5

What is the third part/step of the Scientific Method?

Answer 5

Being Skeptical.

Question 6

What is the definition of experiment?

Answer 6

An observation of natural phenomena carried out in a controlled manner so that the results can be duplicated and rational conclusion can be obtained.

Question 7

What two things determine the state of matter of any sample?

Answer 7

Temperature and the attraction among the particles that make up the sample.

Question 8

What process is used to separate a homogeneous mixture?

Answer 8

Distillation.

Question 9

What happens when a substances undergoes a chemical change?

Answer 9

A new substances is formed destroying the identity of previous one. Irreversible process.

Question 10

Cutting your hair is an example of what type of change?

Answer 10

Physical change.