PROPERTIES OF MATTER
In this area, the topics covered are: specific heat capacity; specific latent heat; gas laws and the kinetic model.
SUB UNIT HEADING |
DETAILS |
Specific heat capacity |
- Knowledge that different materials require different quantities of heat to raise the temperature of unit mass by one degree Celsius. - Use of an appropriate relationship to solve problems involving mass, heat energy, temperature change and specific heat capacity. E = cmΔT - Knowledge that the temperature of a substance is a measure of the mean kinetic energy of its particles. - Use of the principle of conservation of energy to determine heat transfer |
Specific latent heat |
- Knowledge that different materials require different quantities of heat to change the state of unit mass. - Knowledge that the same material requires different quantities of heat to change the state of unit mass from solid to liquid (fusion) and to change the state of unit mass from liquid to gas (vaporisation). - Use of an appropriate relationship to solve problems involving mass, heat energy and specific latent heat. E = ml |
Gas laws and the kinetic model |
- Definition of pressure in terms of force and area. - Use of an appropriate relationship to solve problems involving pressure, force and area. p = F/A - Description of how the kinetic model accounts for the pressure of a gas. - Knowledge of the relationship between Kelvin and degrees Celsius and the absolute zero of temperature. 0K = 273 ͦ C - Explanation of the pressure–volume, pressure–temperature and volume–temperature laws qualitatively in terms of a kinetic model. - Use of appropriate relationships to solve problems involving the volume, pressure and temperature of a fixed mass of gas. p1V1 = p2V2 p1/T1 = p2/T2 V1/T1 = V2/T2 pV/T = constant - Description of experiments to verify the pressure–volume law (Boyle’s law), the pressure–temperature law (Gay-Lussac’s law) and the volume–temperature law (Charles’ law). |
Summary Notes & Questions
Remember to continual check your past paper attempts and review unknown areas with your summary notes. Websites like BBC Bitesize and Mr MacKenzie Fizzics will also help your revision. Ask your teacher if you are unsure of how to proceed with your revision plan and to clarify areas you are unsure about.