Year 9 end of year test part 2

Question 1

How are ions formed?

Answer 1

Loss or gain of electrons in the outer shell, leading to a full outer shell.

Question 2

Why are group zero unreactive?

Answer 2

They already have full outer shells

Question 3

ionic bonding is…

Answer 3

the bond formed from the strong electrostatic attraction between positive or negative ions.

Question 4

oxidation is

Answer 4

loss of electrons

Question 5

reduction is

Answer 5

gain of electrons

Question 6

giant ionic lattices have high melting and boiling points because

Answer 6

the bonds are strong and require a lot of energy to break

Question 7

Elements are

Answer 7

Substances of one type of atom

Question 8

Mixtures are

Answer 8

multiple substances mixed but not bonded together

Question 9

Compounds are

Answer 9

multiple elements chemically bonded together

Question 10

Metals are

Answer 10

conductive and turn into oxides

Question 11

Non-metals are

Answer 11

Insulators and turn into dioxides

Question 12

Metals are where on the periodic table

Answer 12

the left

Question 13

Non-metals are where on the periodic table

Answer 13

the right

Question 14

Solvent

Answer 14

A liquid a substance dissolves in

Question 15

Solute

Answer 15

A substance dissolving in a liquid

Question 16

Solution

Answer 16

a liquid a substance has already dissolved in

Question 17

Saturated

Answer 17

used to describe a solution when no more solute can dissolve

Question 18

Solubility

Answer 18

The amount of solute that can dissolve in a solvent at a certain temperature in grams per 100 grams

Question 19

Sodium, Potassium, Ammonium and Nitrates

Answer 19

Soluble

Question 20

Chlorides

Answer 20

Soluble except silver and lead

Question 21

Sulphates

Answer 21

Soluble except for barium calcium and lead

Question 22

carbonates

Answer 22

insoluble except for sodium potassium and ammonium

Question 23

hydroxides

Answer 23

insoluble except for sodium potassium and calcium