Solids, liquids and gases in a nutshell

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  • Created on: 14-04-13 13:38
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Solids, Liquids and Gases in a Nutshell
1. Describe and draw diagrams to show the motion and bonds between molecules in
solids, liquid and gases
2. Density = mass / volume experiments involving density
3. Pressure = force/area
4. The pressure of a column of a liquid is density x acceleration due to gravity x height
of column
5. Pressure can be measured using a U tube containing liquid
6. The pressure at a point in a gas or liquid which is at rest acts equally in all directions
7. Molecules in a gas have a random motion. They exert a force and hence a
pressure on t he walls of the container
8. Brownian motion provides evidence for the existence of molecules
9. For a fixed amount of gas at constant temperature pressure x volume remains constant
so P1V1=P2V2 If the pressure is doubled the volume is halved
10. There is an absolute zero of temperature which is ­ 273 0C
11. To find a Kelvin temperature add 273 to a Celsius temperature
12. An increase in temperature results in an increase in the speed of gas molecules
13. For a fixed mass of gas at constant volume P1/T1=P2/T2 (the temperatures are in


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