Acids and bases and metals - Test Bite

1. What does this hazard symbol mean?

corrosive
irritant
harmful

2. Which of these acids is most likely to be dangerous?

citric acid
carbonic acid
hydrochloric acid

3. Which statement about bases is true?

they are all alkalis
they can neutralise acids
they are all soluble

4. Which statement about alkalis is true?

they are all bases
they cannot neutralise acids
they are all insoluble

5. What happens to litmus paper in acidic solutions?

red litmus turns blue
blue litmus turns red
yellow litmus turns green

6. Universal indicator solution is usually green to begin with. What does this mean?

it is acidic
it is alkaline
it is neutral

7. A liquid has a pH of 7.5 - what does this mean?

it is weakly acidic
it is weakly alkaline
it is neutral

8. A liquid has a pH of 1 - what does this mean?

it must be sodium hydroxide solution
it is strongly acidic
it is weakly acidic

9. What products are formed when a metal oxide reacts with an acid?

a salt only
a salt and water
a salt, water and carbon dioxide

10. What products are formed when a metal carbonate reacts with an acid?

a salt only
a salt and water
a salt, water and carbon dioxide

11. Farmers use lime to neutralise their soils. What sort of substance is lime?

a base
an acid
a sharp tasting drink

12. Which acid could be used to make ammonium nitrate (a type of fertiliser)?

hydrochloric acid
sulfuric acid
nitric acid

13. Which salt is made when copper oxide and sulfuric acid react together?

copper sulfate
copper sulfuroxide
copper sulfide

14. Which gas is produced when magnesium reacts with hydrochloric acid?

carbon dioxide
oxygen
hydrogen