9.1 Common Acids And Alkali

Question 1

6 things that contain acid

Answer 1

Foods drinks seasonings personal care products household cleaners (toilet) and drugs (aspirin)

Question 2

acids in lab

Answer 2

Hydrochloric sulphuric nitric

Question 3

4 properties of acids

Answer 3

Sour taste, conduct electricity, react w alkalis, react w many materials

Question 4

Uses of acids

Answer 4

Preservatives remove stains, make industrial chemicals

Question 5

How does acid preserve food

Answer 5

Microorganisms can’t grow in acidic conditions and may even kill them

Question 6

How does acid remove stains

Answer 6

Cleaning agents, hydrochloric acid in toilet cleaners, toilet bowl stains

Question 7

What industrial chemicals are made by acid, and which kind of acid

Answer 7

Sulphuric acid: fertilizers, dyes, paints

Question 8

5 things that contain alkalis

Answer 8

Glass/kitchen/drain cleaners, baking soda, toothpaste, soap, alkaline batteries

Question 9

Alkalis in lab

Answer 9

Sodium hydroxide, ammonia solution, calcium hydroxide (limewater)

Question 10

4 properties of alkalis

Answer 10

Bitter taste, slippery, conduct electricity, react w acids

Question 11

Uses of alkalis

Answer 11

Remove greases, make industrial chemicals

Question 12

What alkalis is used to remove grease from Stoves and windows
What alkalis is used to remove grease/hair in drains

Answer 12

Ammonia in Kitchen cleaners
Sodium hydroxide in drain cleaners (heat when dissolved)

Question 13

6 lab safety precautions

Answer 13

Hazard warning labels, gloves and goggles, acidic alkaline wastes in appropriate waste bottles, wash hands throughly, don’t taste, don’t mix

Question 14

What to do if accidents happen

Answer 14

Affected area, slow running water, 10min
Contaminated clothing, avoid contact w chemical
Eye wash bottle 10 min
Wash til ambulance arrives, take sample