Atomic Structure: The Atom

Question 1

How is the particle model Limited?

Answer 1

• The size
• The distances between them
• The forces between them aren’t shown

Question 2

What subatomic particles make up an atom?

Answer 2

• Protons
• Neutrons
• Electrons

Question 3

What particles are found in the nucleus?

Answer 3

Protons and neutrons

Question 4

Where are electrons found?

Answer 4

In the shells.

Question 5

What subatomic particle distinguishes each element?

Answer 5

Protons.

Question 6

The atom is a _______ charged nucleus surrounded by _________ charged electrons.

Answer 6

The atom is a positively charged nucleus surrounded by negatively charged electrons.

Question 7

The nuclear radius is much ______ than that of an atom and most of the mass is in the _______.

Answer 7

The nuclear radius is much smaller than that of an atom and most of the mass is in the nucleus.

Question 8

What is the charge of an electron?

Answer 8

-1/Negative

Question 9

What is the charge of a proton?

Answer 9

+1/Positive

Question 10

What is the charge of a neutron?

Answer 10

0/Neutral

Question 11

What is the Relative Atomic Mass of an electron?

Answer 11

1/2000

Question 12

What is the Relative Atomic Mass of a proton?

Answer 12

1

Question 13

What is the Relative Atomic Mass of a Neutron?

Answer 13

1

Question 14

How do you work out Atomic number?

Answer 14

Number of Protons/Number of Electrons

Question 15

How do you work out Mass number?

Answer 15

Number of Protons + Neutrons