Chemistry/Identifying and Making Mixtures Prep

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Preparation for Science 8 Lab

12 Sets of 11 different small test tubes:

Tube A: 2 mL of saturated copper sulphate solution
Tube B: 2 mL of saturated sodium chloride solution
Tube C: 2 mL of ethanol
Tube D: 1 mL of a 1:3 mixture of white sand and sodium chloride, thoroughly mixed together.
Tube E: 1 mL of powdered cupric sulphate
Tube F: 2 mL of salad oil
Tube G: 2 mL of vinegar containing a small amount of green food colouring (not too dark)
Tube H: 1 mL of glycerine
Tube I: 0.2 – 0.3 g of starch
Tube J: 5 mL of 0.2 M sodium thiosulphate, Na2S2O3•5H2O
Tube K: 10 drops of 2 M hydrochloric acid

Equipment needed:

4 dozen watch glasses
dropping pipets
2 – stands with rings and clay triangles
2 – filter funnels with folded filter papers
salt water, any concentration – about 100 mL
sand in water – about 100 mL