Yr7 C4.1 Acids and alkalis

What do acids typically taste like?

• Bitter

• Sour

• Salty

Which of the following is an alkali?

• Vinegar

• Lemon juice

• Soap solution

Which acid is found in vinegar?

• Hydrochloric acid

• Ethanoic acid

• Citric acid

What does the term “corrosive” mean when used on a chemical label?

• It causes stains on clothing

• It burns or damages skin and eyes

• It smells bad

How can you reduce the risk when using corrosive acids or alkalis?

• Smell the substance carefully

• Store it in direct sunlight

• Wear eye protection and keep it off your skin

What is the key difference between a concentrated and a dilute acid?

• Concentrated acid has larger particles

• Concentrated acid contains more acid particles per litre

• Dilute acid is stronger

Which bottle contains more hydrogen chloride per litre?

• Bottle A

• Bottle B

• Both contain the same

What is the acid found in your stomach?

• Ethanoic acid

• Citric acid

• Hydrochloric acid

Why is vinegar safer than pure ethanoic acid?

• Vinegar contains water that dilutes the acid

• Vinegar has no acid in it

• Pure ethanoic acid is colder

What do most alkalis feel like?

• Fizzy

• Soapy

• Sticky