States Of Matter Third Year Revision

Question 1

How do we plan an experiment

Answer 1

1.Observation, 2.research, 3.hypothesis, 4.experiment, 5.collect data, 6.analysis, 7.conclusion

Question 2

What makes a good experiment?

Answer 2

• Change only one variable
• Repeat measurements to ensure they are accurate
• Have a control, so that you have something to compare to
• Present your results in a table and graph which is easy to read

Question 3

What makes a good graph?

Answer 3

• Give it a suitable title
• Label the axes with titles and units
• Have a suitable and accurate scale
• Have points plotted clearly

Question 4

Solid

Answer 4

-rigid -fixed shape -fixed volume -cannot be squashed

Question 5

Liquid

Answer 5

-not rigid -no fixed shape - fixed volume -cannot be squashed

Question 6

Gas

Answer 6

-not rigid - no fixed shape - no fixed volume -can be squashed

Question 7

Melting

Answer 7

When solids are heated they vibrate faster until eventually they break apart and form a liquid.

Question 8

Freezing

Answer 8

removing heat energy from a liquid the opposite can happen and a liquid forms a solid.

Question 9

Freezing

Answer 9

removing heat energy from a liquid the opposite can happen and a liquid forms a solid.