Reactions Of Acids With Bases Flashcards Preview

Abi Science 2016 > Reactions Of Acids With Bases > Flashcards

Flashcards in Reactions Of Acids With Bases Deck (41):
1

What is an exchange reaction?

When the first compound swaps an element with the second molecule during a reaction

2

What is a neutralisation reaction?

When an acid and a base react together to form a neutral substance

3

How do we use neutralisation reactions in industry?

To reduce the effects of chemical waste

4

What does adding a base to an acid do?

It raises the pH

5

What does adding an acid to a base do?

It lowers the pH

6

What is the pH of carbon dioxide?

Acid

7

What is the pH of sulphur dioxide?

Acid

8

What is the pH of a metal hydroxide?

Base

9

What is the pH of a metal carbonate?

Base

10

What happens when an acid reacts with a metal oxide?

A neutralisation reaction happens

11

What is produced during a reaction between a metal oxide and an acid?

Water
A salt

12

How does one determine the type of salt created?

The metal in the metal oxide and the negative ion in the acid

13

How can soil become acidic?

From over use of fertilisers and decaying organic matter

14

What soil do plants grow best in?

pH 6.5-7

15

How do farmers neutralise the acidity of soil?

By adding limestone

16

How is acid rain formed?

When waste products (carbon dioxide and sulphur dioxide) are released from factories into the air
These acidic gasses mix with the water vapour in the air and later falls to earth as acid rain

17

What countries are most affected by acid rain?

USA
Canada
India
China

18

How do governments try to deal with acid rain?

Putting a tax on factories that emit to many metal oxides

19

Where does the word hydroxide come from?

Hydrogen and oxygen

20

What is the elemental order of a hydroxide?

The metal
Then the Oxygen
Then the Hydrogen

21

What is the pH of a hydroxide?

Basic

22

What is an ion?

A molecule that stays together and bonds to things together

23

Why is the oxygen first in a hydroxide?

The oxygen is bonded to the metal and the hydrogen is bonded to the oxygen, but the hydrogen is not bonded to the metal

24

What is a salt?

A metal bonded with an ion

25

What is the pH of a metal carbonate?

Base

26

What is the general equation of an acid and a metal carbonate?

Acid + metal carbonate -> salt + carbon dioxide + water

27

What is the pH of lime water?

Basic

28

How do you prove the presence of carbon dioxide?

Lime water turns milky in the presence of carbon dioxide

29

What is a metal hydroxide?

A metal that has bonded to a hydroxide ion

30

What is another name for sodium hydroxide?

Caustic soda

31

What is caustic soda used for?

To make soap
To make drain cleaners
To make detergents
To make agricultural chemicals

32

How is a metal hydroxide formed?

When a metal reacts with water

33

What is lime water?

Calcium hydroxide

34

What is common table salt?

Sodium chloride

35

What is limestone?

Calcium carbonate

36

What is soda ash?

Sodium carbonate

37

What is limestone used for?

Building material
Chalk

38

What is soda ash used for?

Water softener in detergents
Can be used to remove grease, oil and wine stains

39

What happens when an acid reacts with a metal carbonate?

Water is formed
Carbon dioxide is formed
A salt is formed

40

What type of reaction occurs between a metal hydroxide and an acid?

A neutralisation

41

What happens when carbon dioxide is bubbled through lime water?

It will form calcium hydroxide, which turns the water cloudy