PRACTICALS

Question 1

HOW CAN YOU INVESTIGATE HOW CHANGES IN CONCENTRATION AFFECT THE RATE OF REACTUION

Answer 1

If a reaction produce s gas… you can collect the gas and then measurw the volume given off at time intervals(collect the gas in a gas syringe)

Question 2

How can you measure the decreasingf light passing through solution?

Answer 2

• You measure how long it takes you until you look through the solution and can no longer see the cross
• you can then use this to measure the rate at which the precipitate is forming in the reaction

Question 3

Stages of detecting dyes in food colouring

Answer 3

• draw a pencil line near the bottom of a sheet of chromatography paper
• use a capillary tube to dab a spot of the soltuion on the pencil line
• stand the paper in the solvent at the bottom of the beaker with the line above the solvent
• allow the solvent to travel up the paper and removing the paper before the solvent reaches the top and make the colvent from on the paper