Acids And bases

Question 1

Name 3 types of indicators

Answer 1

Universal, Red cabbage and litmus indicator

Question 2

What is neutralisation

Answer 2

When acids and alkalis cancel each other out to make a neutral substance

Question 3

Name 2 neutral substances

Answer 3

Water, salts

Question 4

Acid + alkali=

Answer 4

Salt+water

Question 5

How do you name salts

Answer 5

The first part comes from the alkali (SODIUM chloride)

The second comes from the acid ( sodium CHLORIDE)

Question 6

Name what makes the salt barium sulphate

Answer 6

Barium hydroxide+sulphuric acid

Question 7

What does dilution do

Answer 7

It brings the pH closer to seven

Question 8

How does dilution work

Answer 8

By adding a neutral substance it reacts with the original substance to bring the pH closer to seven. The more of the neutral substance you add the closer the pH gets to seven

Question 9

If you dilute an alkali the pH …

Answer 9

Decreases

Question 10

What gas relight a glowing splint

Answer 10

Oxygen

Question 11

Name two harmless acids

Answer 11

Citric acid and acetic acid

Question 12

Give an example of a corrosive substance

Answer 12

Concentrated sulphuric acid

Question 13

Name the stages of the cause of acid rain

Answer 13

1.Acid gases such as sulphur dioxide are released into the atmosphere. 2. The gases are carried by the wind. 3. The gases dissolve in rainwater to make acid rain

Question 14

Name three effects of acid rain

Answer 14

Kills plant life
pollutes rivers and streams
Erodes stonework

Question 15

Ions in acids

Answer 15

H+

Question 15

Ions in bases

Answer 15

OH-

Question 15

Strong acids and alkalines do

Answer 15

Full dissociation

Question 16

Weak acids and alkalines do

Answer 16

Partial dissociation

Question 17

Non-metal oxide + water➡️?

Metal oxide + water ➡️ ?

Answer 17

Acidic sol

Basic sol

Question 18

Spectator ions equations

Answer 18

2H+(aq)+O-2(s)➡️H2O(l)
H+(aq)+OH-(aq)➡️H2O(l)
2H+(aq)+CO3^2-(aq)➡️H2O(l)+CO2(g)
2H+(aq)+CO3^2-(s)➡️H2O(l)+CO2(g)

Question 19

What is titration

Answer 19

A way of accurately making a salt from an acid and an soluble base. It can be used to find concentrations of solutions