1. What do our copper sulfate crystals look like?
Objectives:
To know the state changes in evaporation, condensation and sublimation.
To understand what happens to particles during evaporation.
To understand the difference between evaporation and boiling.
To be able to answer questions relating to the practical.
To be able to construct sentences about changes in state.

2. What do our copper sulfate crystals look like?
Objectives:
To know the state changes in evaporation, condensation and sublimation.
To understand what happens to particles during evaporation.
To understand the difference between evaporation and boiling.
To be able to answer questions relating to the practical.
To be able to construct sentences about changes in state.

3. Results
Look at your watch glass and make a sketch of the crystals you have obtained.
Use a ruler to measure the different sizes of the crystals you have obtained.

4. Suggest what has happened to the water particles.
Questions
The copper sulfate solution contained copper sulfate particles dissolved in water. Name the type of particle that has been left on the watch glass.
Suggest what has happened to the water particles.
Name the process that has happened to your copper sulfate solution to leave solid crystals behind.
Predict whether you would have found crystals on your watch glass if you had covered it before you left it. Explain your answer.

5. What do our copper sulfate crystals look like?
Objectives:
To know the state changes in evaporation, condensation and sublimation.
To understand what happens to particles during evaporation.
To understand the difference between evaporation and boiling.
To be able to answer questions relating to the practical.
To be able to construct sentences about changes in state.

6. When a liquid boils bubbles of the substance in the gas state form throughout the liquid.
They rise to the surface of the liquid and escape.
This will only happen when the boiling point of the liquid is reached.
During evaporation however, particles escape from the liquid surface.
This can happen at any temperature.

7. What do our copper sulfate crystals look like?
Objectives:
To know the state changes in evaporation, condensation and sublimation.
To understand what happens to particles during evaporation.
To understand the difference between evaporation and boiling.
To be able to answer questions relating to the practical.
To be able to construct sentences about changes in state.

8. In pairs get five sentences written on the whiteboards.

9. In boiling ..
..particles leave from all parts of the liquid.
In condensing..
.. substances change from the gas to the liquid state.
3. In evaporating ..
..particles leave from the surface of the liquid.
4. In boiling ..
..substances change from the liquid to the gas state.
5. In evaporating ..

10. What has happened to the water from the copper sulfate solution?
Which have more energy, the particles in liquid water or in the gas state?
Write down one similarity between evaporating and boiling.
What down one difference between evaporating and boiling.

11. When a liquid boils bubbles of the substance in the gas state form throughout the liquid.
They rise to the surface of the liquid and escape.
This will only happen when the boiling point of the liquid is reached.
During evaporation however, particles escape from the liquid surface.
This can happen at any temperature.

12. When a liquid boils bubbles of the substance in the gas state form throughout the liquid.
They rise to the surface of the liquid and escape.
This will only happen when the boiling point of the liquid is reached.
During evaporation however, particles escape from the liquid surface.
This can happen at any temperature.