Y9 Energy Flashcards
How do you work out density?
Mass (divided by) volume
How do you work out volume?
Mass (divided by) density.
How do you work out mass?
Volume (times) density.
What are solid’s particles like?
Tightly packed together.
What are liquid’s particles like?
Loosely pack but still close together.
What are gas’s particles like?
Far Apart.
What are the properties of a solid?
It cannot change shape.
It cannot flow.
It cannot be compressed.
What are the properties of a liquid?
It can change shape.
It can flow.
It cannot be compressed.
What are the properties of a gas?
It can change shape.
It can flow.
It can be compressed.
Why does the temperature of a substance not change when it is changing state?
Because the energy is taken up while changing state.
What is specific heat capacity?
It is the number of Joules (J) of heat energy you need to cause 1kg of a substance to rise by 1 degree.
What are the formulas for working out specific heat capacity.
SHC = Specific Heat Capacity
SHC = Heat (divided by) temp change (times) mass
temp change = Heat (divided by) SHC (times) mass
Mass = Heat (divided by) temp change (times) SHC
Heat = SHC (times) temp change (times) mass
What is latent heat?
It is the amount of energy needed for a substance to change its state without increasing the temperature.
What is specific latent heat?
It is the amount of energy per Kg of a substance needed for it to change its state without the temperature changing.
What are the formulas for working out specific latent heat?
SLH = Specific Latent Heat
SLH = Thermal energy (divided by) Mass
Mass = Thermal energy (divided by) SLH
Thermal energy = Mass (times) SLH
