EXPLORING SCIENCE 7

TECHNICIAN LIST

 

Unit  E: Acids and Alkalis

 

Lesson

Resources

1

Selection of bottles and test tubes of chemicals with hazchem labels (can be empty)

Concentrated sulphuric acid (corrosive)

Dilute sulphuric acid (irritant)

Mercury, test tube of chlorine, test tube of oxygen, sugar, cotton/paper towels

Hazard stamp and ink pad

2

Hydrochloric, sulphuric and nitric acids

Boiling tube (x3)

Magnesium ribbon

Acidic foods (to taste! – class set)

Coca cola, salt and vinegar crisps, sour mix, lemon juice, pickled onions, tomato ketchup, ascorbic acid and others

Exploring Science 7 textbooks

3

4x solutions of hydrochloric acids (1M, 0.5M, 0.1M, 0.01M) with hazard labels

Pieces of Mg ribbon (1cm in length)

Marble chips, thermometers

4

3 x beakers: 1 acid, 1 alkali, 1 fresh water

Hydrochloric acid, sodium hydroxide, lime water (weak), acetic acid, litmus paper, red cabbage, mortar and pestle, glass rods

Exploring Science 7 textbooks

Filter funnels, conical flasks

 

5

pH scales; spotting tiles, pipettes, universal indicator, solutions of coffee, tea, salt water, lemon juice, vinegar, bleach limewater, hydrochloric acid, sulphuric acid (labelled battery acid), ascorbic acid (labelled vitamin C), soapy water, milk etc

6

Sodium hydroxide (0.1M), hydrochloric acid (0.1M), pipettes, thermometers, universal indicator, pH scales

Exploring Science 7textbooks

 

7

Mixture of food and water and some acid (pretend vomit), 3 mixtures of bicarbonate and salt in different ratios (1-3, 1-6, 1-9), universal indicator, test tubes, measuring cylinders, dilute hydrochloric acid, stop clocks, electronic balances, beakers, goggles

8

Glue