Gemma Young and Mark Levesley Solutions for Exercise 17: End of chapter review

Some air is pumped into a bicycle tyre.

• Predict what will happen to the amount of gas pressure inside the tyre as air is pumped in.
• Use particle theory to explain your prediction.

Use particle theory to explain why you can compress a gas but not a liquid.

Rock salt is found in the ground. It is a mixture of rock particles and salt. Describe how you would produce pure, dry salt from rock salt. You should explain the function of each step.

Rashin added a few drops of blue ink to a glass of cold water. Describe what she will see in the glass. Explain why.

Rashin added a few drops of blue ink to a glass of cold water. She then added a few drops of the ink to a glass of hot water. Describe how her observations would be different to what happened in the glass of cold water. Give a reason for this.

Draw a diagram to show the particles in a piece of solid copper.

Draw a diagram to show the particles in carbon dioxide gas $\left({\mathrm{CO}}_2\right)$.

In humans and other mammals, the air is breathed into the lungs. Oxygen travels by diffusion from the air in the lungs into the blood. The blood must keep moving around the body to keep the rate of diffusion high. Explain why.