Workbook Answers 10.5

Section 10.5

A. Concept checking     p.34

False

True

True

True

B. Multiple choice          p.34

B

D

D

C

C. Questions                   p.35

1.    (a)     Rainwater that has a pH value lower than 5.6.

       (b)     Sulphur dioxide and nitrogen oxides

       (c)     Calcium carbonate

       (d)     Calcium carbonate in limestone reacts with acid rain. Calcium carbonate dissolves and gives off carbon dioxide in the process.

       (e)     •      Making the water in lakes and rivers so acidic that fish and plants cannot survive.

                 •      Making soil too acidic and thus affecting plant growth.

                 (or other reasonable answers)

2.    A small amount of vinegar was left in the bottle. The water she used to water her plants was therefore acidic. As a result, the soil became too acidic for plant growth and the plants died.