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 atom 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 off atomic radii and bond lengths?

Answer 8

10 to the power of -10m

Question 9

What are subatomic particles?

Answer 9

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 mass 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

Because they contain the same amount of protons and electrons which cancel each other 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

1/2000