Chapter 10: Acids and Alkali's

Question 1

a. Name two acids made by plants.
b. Name two acids produced by animals.

Answer 1

citric acid and tartaric acid,
hydrochloric acid and Uric acid

Question 2

a. What is the gas in the air?
b. What is the common name for ethanoic acid?

Answer 2

Oxygen
Vinegar

Question 3

What property do indicators have that helps in the study of acids and
alkalis?

Answer 3

They change colour when the acidity or alkalinity (or pH) changes.

Question 4

A solution is shown to be pH 1with universal indicator paper. What
color will it turn a purple litmus solution?

Answer 4

Red.

Question 5

A hydrangea has pink flower. You collect some soil from around it and
test it with litmus paper solution. What color would you expect the
litmus solution to turn?

Answer 5

The soil is alkaline so the litmus would turn blue

Question 6

What are the products when a neutralization reaction occurs?

Answer 6

Salt and water