Quiz 2: Chapters 3 and 4

Question 1

Which state of matter is the most energetic?

Answer 1

Gas

Question 2

An exothermic reaction is one in which heat is:

Answer 2

Liberated

Question 3

Which of the states of matter has no fixed volume and no fixed shape?

Answer 3

Gases

Question 4

The atomic number is equal to:

Answer 4

The number of protons

Question 5

A neutron has a charge of:

Answer 5

0

Question 6

Elements in the vertical groups or families on the periodic table have the same number of:

Answer 6

Valence electrons

Question 7

These are positive and negative numbers that are assigned to atoms to show whether they bond to atoms by gaining or losing electrons

Answer 7

Oxidation numbers

Question 8

Ionic bonds are due to:

Answer 8

A complete transfer of electrons between atoms

Question 9

The process where a solid goes directly to the gaseous state without going through a liquid state is called:

Answer 9

Sublimation

Question 10

Which is not a pure substance?

• Water
• Air
• Hydrogen
• Carbon dioxide

Answer 10

Air

Question 11

The mass of an atom is mainly due to:

Answer 11

• Protons

* Neutrons

Question 12

Homonuclear diatomic molecules form what type of bonds

Answer 12

Covalent

Question 13

Entropy is a measure of?

Answer 13

Disorder

Question 14

Volume is inversely proportional to temperature in Charles’ law. (T/F)

Answer 14

False

Question 15

The temperature of a solid changes as it is melting. (T/F)

Answer 15

False

Question 16

If a gas has a volume of 1L at 1 atmosphere of pressure, and we increase the pressure to 2 Atmospheres, what is the new volume?

Answer 16

1/2L