Chemistry Ka3

Question 1

What does the name of a salt depend on?

Answer 1

The metal used
The acid used
The positive ion in the base, alkali or carbonate used

Question 2

When magnesium reacts with hydrochloric acid, two products are hydrogen and magnesium. What is the equation?

Answer 2

Mg + 2HCl –> MgCl₂ + H₂

Question 3

Mg+2HCl₂ +H₂

What is this called?

Answer 3

A redox reaction because it has both reduction and oxidation

Question 4

Fe - 2e⁻ –> ???

Answer 4

Fe²⁺

Question 5

What is a base?

Answer 5

An insoluble metal hydroxide (magnesium hydroxide) and a metal oxide (copper oxide)

Question 6

What is insoluble?

Answer 6

Something that doesn’t dissolve in water

Question 7

What is an alkali?

Answer 7

A soluble metal hydroxide (sodium hydroxide)

Question 8

What is an example of a metal carbonate?

Answer 8

Copper carbonate

Question 9

What is potassium hydroxide?

Answer 9

An alkali

Question 10

What is zinc hydroxide (insoluble)

Answer 10

A base

Question 11

What is magnesium oxide?

Answer 11

A base

Question 12

What is calcium oxide?

Answer 12

A base

Question 13

How do u remember making salts?

Answer 13

MASH
BASH
AASH
MCASHC

Question 14

What does MASH stand for?

Answer 14

Metal + acid –> salt + Hydrogen

Question 15

What does BASH stand for?

Answer 15

Base + acid –> salt + Water

Question 16

What does AASH stand for?

Answer 16

Alkali + acid –> salt + water

Question 17

What does MCASHC stand for?

Answer 17

Metal carbonate + acid –> salt + water + carbon dioxide

Question 18

Hydrochloric acid +magnesium oxide = ???

Answer 18

Magnesium chloride

Question 19

Sulfuric acid + copper hydroxide =

Answer 19

Copper sulphate

Question 20

Nitric acid + potassium oxide =

Answer 20

Potassium nitrate

Question 21

A student wanted to make potassium nitrate. Why would it not be sensible for her to do this?

Answer 21

Because potassium is very reactive and may explode when in contact with nitric acid

Question 22

A student wanted to make copper sulphate. Why would it not be sensible for her to react copper with sulfuric acid?

Answer 22

It will not react as the copper will not displace the hydrogen because it is less reactive

Question 23

If a gas was produced what might you see?

Answer 23

Fizzing

Question 24

What happens when a metal reacts?

Answer 24

It gets smaller

Question 25

What is the symbol for magnesium sulfate?

Answer 25

MgSO4

Question 26

What is the symbol for hydrogen?

Answer 26

H₂

Question 27

What is the ionic equation for neutralisation?

Answer 27

H⁺ (aq) + OH⁻ (aq) --> H₂O (L)

Question 28

What is this state symbol: (s)

Answer 28

Solid

Question 29

What is this state symbol (g)

Answer 29

Gas

Question 30

What is this state symbol: (L)

Answer 30

Liquid

Question 31

What is this state symbol: (aq)

Answer 31

Aqueous

Question 32

Magnesium bromide Mg²⁺ Br⁻

Answer 32

MgBr₂

Question 33

Aluminium chloride Al³⁺

Answer 33

AlCl3

Question 34

Aluminium hydroxide Al³⁺ OH⁻

Answer 34

Al³ ⁺ OH⁻ Al(OH),3 OH⁻ OH⁻

Question 35

What is soluble

Answer 35

Dissolves in water

Question 36

What is insoluble

Answer 36

Doesn't dissolve in water

Question 37

What do all acids release into a solution when added to water?

Answer 37

H⁺ (aq) ions

Question 38

What is the reaction between an acid and an alkali called?

Answer 38

Neutralisation

Question 39

Acid + carbonate -->

Answer 39

salt + water + carbon dioxide

Question 40

Magnesium nitrate | Mg² ⁺ NO,3⁻

Answer 40

Mg(NO,3)₂