C1.2.1 - Atomic Structure

Question 1

What are different element made of?

Answer 1

Different atoms

Question 2

Despite their size, do all atoms have chemical properties?

Answer 2

Yes

Question 3

How is a molecule made?

Answer 3

When two or more atoms join together

Question 4

What are atoms joined by in molecules?

Answer 4

Attractive forces known as chemical bonds

Question 5

What is the 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 bond length?

Answer 7

The length between two centres of two 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

Three even smaller particles in atoms

Question 10

What are the three 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 in the 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 relative mass of a proton?

Answer 13

1

Question 14

What is the relative charge of a proton?

Answer 14

+1

Question 15

What is the relative charge if a neutron?

Answer 15

0

Question 16

Why do atoms have no overall charge?

Answer 16

There are equal amounts of protons and electrons

Question 17

What is the relative mass of an electron?

Answer 17

0.0005

Question 18

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

Answer 18

1/2000