Year 10 Topic 2.1-2.2 Review

Some liquid is heated in a flask.
The diagrams show the height of the liquid in the tube when the liquid is cold and when it is hot.
What is the difference in the heights?

• 1.7 cm 
• 2.8 cm
• 3.2 cm
• 4.5 cm

Which answer describes the properties of solids and of liquids at a fixed temperature? 

• solids - definite volume and definite shape

  liquids - no definite volume but definite shape

• solids - no definite volume but definite shape

  liquids - definite volume and definite shape

• solids - definite volume and definite shape

  liquids - definite volume but no definite shape

• solids - no definite volume but definite shape

  liquids - no definite volume and no definite shape

Air is pumped slowly into a car tyre to increase the pressure. The temperature of the air does not change.
Which line in the table is correct? 

• A
• B
• C
• D

The thermometer in the diagram has no scale. Where must the bulb be placed so that 0 °C can be marked on the stem?

• in boiling water
• in cold water
• in a freezer
• in melting ice 

A sample of a solid is heated for 12 minutes and its temperature noted every minute. The results are shown in the table.
How should the sample be described at the end of the 12 minutes? 

• all solid 
• in the process of melting
•  all liquid
• in the process of boiling

Viewed through a microscope, very small particles can be seen moving with Brownian motion. Which line in the table is correct? 

• A
• B
• C
• D

The pressure of a fixed mass of gas in a cylinder is measured. The volume of the gas in the cylinder is then slowly decreased.
Which graph could show the change of pressure of the gas during this process? 

• A
• B
• C
• D

Equal masses of two different liquids are heated using the same heater. The graph shows how the temperature of each liquid changes with time.

What does the graph tell us about the liquids? 

• Liquid 1 has a higher melting point than liquid 2. 
• Liquid 1 has a higher boiling point than liquid 2.
• Liquid 1 starts to melt sooner than liquid 2. 
• Liquid 1 starts to boil sooner than liquid 2.

An engineer wants to fix a steel washer on to a steel rod. The rod is just too big to fit into the hole of the washer.

How can the engineer fit the washer on to the rod? 

• Cool the washer and put it over the rod.
•  Cool the washer and rod to the same temperature and push them together.
• Heat the rod and then place it in the hole.
• Heat the washer and then place it over the rod.

When water evaporates, some molecules escape.  
Which molecules escape?

• the molecules at the bottom of the liquid with less energy than others
• the molecules at the bottom of the liquid with more energy than others 
• the molecules at the surface with less energy than others
•  the molecules at the surface with more energy than others