C4.1.1

Question 1

What are the three main subatomic particles that make up an atom?

Answer 1

Protons, neutrons, and electrons.

Question 2

True or False: The relative atomic mass of an element is the average mass of its isotopes.

Answer 2

True.

Question 3

Fill in the blank: The symbol for Hydrogen is ___ .

Answer 3

H.

Question 4

What is the electronic charge of a proton?

Answer 4

Positive (+1).

Question 5

Which subatomic particle has no charge?

Answer 5

Neutron.

Question 6

What defines an isotope of an element?

Answer 6

Isotopes have the same number of protons but different numbers of neutrons.

Question 7

Multiple Choice: What is the relative atomic mass of Carbon (C)? A) 12 B) 14 C) 16

Answer 7

A) 12.

Question 8

What is a compound?

Answer 8

A substance formed when two or more elements chemically bond together.

Question 9

True or False: Electrons have a negative charge.

Answer 9

True.

Question 10

Fill in the blank: The atomic symbol for Sodium is ___ .

Answer 10

Na.