Topic 1

Question 1

What charge do protons have?

Answer 1

+1

Question 2

What charge do electrons have?

Answer 2

-1

Question 3

What charge do neutrons have?

Answer 3

0

Question 4

What is the mass of a proton?

Answer 4

1

Question 5

What is the mass of a neutron?

Answer 5

1

Question 6

What is the mass of an electron?

Answer 6

Very small

Question 7

Why are atoms neutral?

Answer 7

They have no charge - same number of protons and electrons

Question 8

What is the atomic number?

Answer 8

How many protons there are

Question 9

What does the mass number tell you?

Answer 9

Number of protons and neutrons

Question 10

What do all elements have in common?

Answer 10

The same number of protons

Question 11

What is an isotope?

Answer 11

Same element (same number of protons) but different number of neutrons

Question 12

How do you calculate relative atomic mass?

Answer 12

Sum of (isotope abundance x isotope mass number) / sum of abundance’s of all isotopes

Question 13

What is ionic bonding?

Answer 13

A metal and non-metal reacting

Question 14

In ionic bonding what does the metal do?

Answer 14

Lose electrons to form positive ions

Question 15

In ionic bonding what does the non-metal do?

Answer 15

Gains electrons to form negative ions

Question 16

Why are the ions in an ionic bond strongly attracted?

Answer 16

The have opposite charges

Question 17

What is covalent bonding?

Answer 17

Two non-metals reacting

Question 18

What happens to the atoms in covalent bonding?

Answer 18

Each atom shares an electron

Question 19

What is the formula for ammonia?

Answer 19

NH3

Question 20

What is the formula for calcium chloride?

Answer 20

CaCl2

Question 21

What is the formula for sodium carbonate?

Answer 21

Na2CO3

Question 22

What is the formula for sulfuric acid?

Answer 22

H2SO4

Question 23

What are the properties of mixtures like?

Answer 23

They are just the properties of the separate parts

Question 24

What did Dalton predict about atoms?

Answer 24

Atoms were solid spheres (different spheres make different elements)

Question 25

What did Thomson predict about the atom?

Answer 25

The ‘plum pudding model’. Atoms were balls of positive charge containing electrons

Question 26

What did Rutherford predict about the atom?

Answer 26

The ‘Nuclear Model’. He used the gold foil experiment to find that atoms had a nucleus

Question 27

What did Bohr predict about the atom?

Answer 27

Electrons were contained in shells

Question 28

What did Chadwick predict about atoms?

Answer 28

The existence of neutrons

Question 29

What do Group 0 elements have in common?

Answer 29

All novel gases have full electron shells

Question 30

How was the period table first organised?

Answer 30

In relative atom mass

Question 31

What did Mendeleev predict about the periodic table?

Answer 31

He organised it in order of atomic mass but some switched to match properties - he also left gaps (for undiscovered and isotopes)

Question 32

Why are elements organised into columns?

Answer 32

They are sorted into groups - similar properties

Question 33

What do all elements in the same group have?

Answer 33

The same number of electrons in their outer shell