C1.2.1 - Atomic Structure

Question 1

What are different elements made of?

Answer 1

Different atoms

Question 2

Despite its size, do atoms have chemical properties?

Answer 2

Yes

Question 3

How is a molecule made?

Answer 3

When 2 or more atoms join together

Question 4

What are atoms joined by to create molecules?

Answer 4

Attractive forces known as chemical bonds

Question 5

What is an atomic radius?

Answer 5

Half the diameter of an atom

Question 6

How do you calculate the atomic radius of an atom?

Answer 6

You either calculate the bond length or diameter and then half it.

Question 7

What is a bond length?

Answer 7

The length between 2 centres of 2 atoms that are bonded together.

Question 8

What is the typical length of atomic radii and bond lengths?

Answer 8

10 to the power of -10m

Question 9

What are subatomic particles?

Answer 9

The 3 smaller particles in an atom

Question 10

What are the 3 subatomic particles?

Answer 10

Protons
Neutrons
Electrons

Question 11

Where are the protons and neutrons in an atom?

Answer 11

Joined together as a nucleus as a centre

Question 12

Where are the electrons in an atom?

Answer 12

Travelling around the outside of the nucleus in waves.

Question 13

What is the nucleus?

Answer 13

A combination of protons and neutrons in the centre of an atom

Question 14

What is the relative charge of a proton?

Answer 14

+1

Question 15

What is the relative charge of a neutron?

Answer 15

0

Question 16

What is the relative charge of an electron?

Answer 16

-1

Question 17

Why do atoms have no overall charge?

Answer 17

The charges balance out

Question 18

What is the relative mass of protons?

Answer 18

1

Question 19

What is the relative mass of neutrons?

Answer 19

1

Question 20

What is the relative mass of an electron?

Answer 20

0.0005

Question 21

What is the relative mass of an electron as compared to a proton?

Answer 21

1