Unit 9
Acids and Alkalis
9.4: Corrosive nature of acids
Name: ________________________________ (
) Class: __________ Date: __________________
Watch the Flipped classroom video:
https://e-aristo.hk/qz/jscfce
/hd5z7Z?f=t
Duration: 04:00
Watch the Flipped classroom video and then answer the following questions.
1. A salt and carbon dioxide are produced during the reaction between acids and metals.
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2. We should not store acidic drinks in metal containers because
 the acid will react with the metal to produce toxic vapour.
 the acidic drinks will leave a unpleasant smell in the metal containers.
 the metal containers will be corroded by the acid.
 the metal containers will change the taste of the drinks.
3. Which of the following word equations correctly represents the reaction between hydrochloric acid and
calcium carbonate?
 hydrochloric acid + calcium carbonate  calcium chloride + hydrogen + water
 hydrochloric acid + calcium carbonate  calcium chloride + carbon dioxide + water
 hydrochloric acid + calcium carbonate  calcium sulphate + hydrogen + water
 hydrochloric acid + calcium carbonate  calcium sulphate + carbon dioxide + water
4. Sulphur dioxide and nitrogen oxides are responsible for the formation of acid rain.
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5. Which of the following is NOT the effect of acid rain on the environment and living things?
 Causing air pollution
 Corroding building materials
 Damaging plants
 Causing harm to aquatic life
Aristo Science for the New Century
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