Activity 5.4:
Aim: To show that matter is made up of small and discrete particles
Materials and apparatus: Copper(II) sulphate crystal, water, beaker
Instruction
1. Pour 50 ml of water into a beaker.
2. Put a few crystals of copper(II) sulphate into the beaker of water. Observe the changes in colour of the solution.
3. Add another 50 ml of water into the beaker and record your observation.
Questions
1. What can you observe when more water is added into the beaker? Explain your observation.
2. What conclusion can be made from this activity?
Answer:
1. The colour intensity of copper(II) sulphate decreases as the number of water molecules increases.
2. Matter consists of small and discrete particles.
Aim: To show that matter is made up of small and discrete particles
Materials and apparatus: Copper(II) sulphate crystal, water, beaker
Instruction
1. Pour 50 ml of water into a beaker.
2. Put a few crystals of copper(II) sulphate into the beaker of water. Observe the changes in colour of the solution.
3. Add another 50 ml of water into the beaker and record your observation.
Questions
1. What can you observe when more water is added into the beaker? Explain your observation.
2. What conclusion can be made from this activity?
Answer:
1. The colour intensity of copper(II) sulphate decreases as the number of water molecules increases.
2. Matter consists of small and discrete particles.