Acids and Alkalis

In universal indicator, acids are:

• red

• blue

• green

• purple

In universal indicator, alkalis are:

• blue

• green

• red

• orange

In universal indicator, neutral solutions are:

• orange

• yellow

• purple

• green

Acids have a pH of:

• 0-6

• 4-8

• 8-14

• 1-5

Alkalis have a pH of:

• 0-6

• 7-13

• 8-14

• 6-10

Neutral solutions have a pH of:

• 6-8

• 7

• 9

• 5

An alkali is a base that:

• can dissolve in water

• can be very corrosive

• doesn't neutralise acids

• is always a solid

Sulphuric acid + sodium hydroxide ->

• sodium chloride + hydrogen

• sodium sulphate + water

• sulphur hydroxide + acid

• sodium acid + water

In this reaction, what are the products?

Hydrochloric acid + potassium hydroxide -> potassium chloride + water

• hydrochloric acid

• water

• potassium hydroxide

• potassium chloride

In this reaction, what are the reactants?

Hydrochloric acid + potassium hydroxide -> potassium chloride + water

• hydrochloric acid

• water

• potassium hydroxide

• potassium chloride