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What is meant by ‘internal energy’. [2 marks]
Total kinetic energy and potential energy of all particle in a system.
What is word for changing state from solid to gas directly
Sublimation
A water has a specific heat capacity of 4200.
Explain what is meant by this statement. [3 marks]
Energy that require to raise 1 kg of water by 1 oC
What is meant by ‘specific latent heat of fusion’. [2 marks]
Change 1 kg of substance from solid to liquid with no change in temperature.
What is meant by ‘specific latent heat of vaporisation’. [2 marks]
Change 1 kg of substance from liquid to gas with no change in temperature.
A person has use bicycle pump to pump the tire.
Explain why the gas pressure in the tire. [4 marks]
Carry out work on the gas.
Increase internal energy on the gas.
Increase mean speed of the gas.
Increase number of successful collision.