Paper 1 - Required Practicals

Question 1

Temperature Changes (6)

Answer 1

• Place the polystyrene cup inside the glass beaker to make it more stable.
• Measure an appropriate volume of each liquid.
• Place one of the liquids in a polystyrene cup.
• Record the temperature of the solution.
• Add the second solution and record the highest or lowest temperature obtained.
• Change your
  independent variable
  and repeat the experiment. Your independent variable could be the concentration of one of the reactants, or the type of acid/alkali being used, or the type of metal/metal carbonate being used.

Question 2

Making Soluable Salts

Answer 2

• mixing the solid and acid - beaker and stirring rod
• filtering the mixture - conical flask, -filter paper and filter funnel
• heating the solution - water bath (beaker of water on a tripod and gauze, heated over a Bunsen burner) and evaporating basin
• crystallisation - watch glass