C2.2.3-KS3

C2.2.3 Solubility

Resource

Video Resource

Starter

Mercury dissolving gold

Dissolving Gold in Mercury.mp4

Full version

full version of video



Practical

C2.2.3 Solubility


Demo : - Solubility of different substances

  • Salt
  • Sugar
  • Baking powder
  • Chalk
  • Starch
  • Large Beaker


Demo to show different substances have different solubility


Experiment: -

  • 3x Kettle
  • 3 x balances

x10

  • 1x Thermometer
  • 1x beaker (for 100ml of water)
  • 1x Salt supply
  • 1x Stirrer

DEMO Risk assessment:

  • No risk



Risk assessment:

  • Hot water from kettle

Target:

• Describe what happens when a solute dissolves

• Describe how temperature affects solubility

• Plan how to find out how much of a solute dissolves at a given temperature, with help


• Explain what a saturated solution is

• Explain the meaning of solubility

• Plan an investigation to compare solubility with temperature, considering variables


• Explain why temperature affects the amount of solute dissolved in a solution

• Explain what a solubility graph shows

• Justify the choice of method chosen to investigate solubility of salt in seawater