5.5 Acids and alkalis [Must Do]

Strong acids and strong alkalis are.......

• Able to turn blue litmus paper red

• Corrosive

• Sour

• Sweet

Toothpaste is a _________

• Acid

• Alkali

Where does the sour taste of vinegar comes from?

• nitric acid

• lactic acid

• ethanoic acid

• hydrochloric acid

What kind of acid is present in your stomach?

• Sulfuric acid

• Hydrochloric acid

• Citric acid

• Nitric acid

Acids taste:

• fishy

• salty

• sour

• sweet

Rivers and lakes that have become acidic due to acid rain can be treated with _________ .

• calcium hydroxide

• sodium chloride

• potassium chloride

• hydrochloric acid

The name of an acid in lemon juice is:

• citric acid

• ethanoic acid

• lemonic acid

• sulfuric acid

_{What is the hazard shown in this hazard sign?}

• Explosive

• Corrosive

• Irritant

• High level Irritant

Which of these are alkalis? (pick 2)

• milk

• soap

• tomato juice

• drain cleaner

An alkali can react with an acid. This process is known as?

• balancing

• acidification

• combustion

• neutralisation