Physics Unit 3 EQUATIONS

Question 1

Density – What is the equation for density?

Answer 1

Density = mass ÷ volume

Question 2

Latent Heat – What is the equation for energy during a change of state?

Answer 2

Energy = mass × specific latent heat

Question 3

Latent Heat – What does the equation for latent heat show?

Answer 3

The energy needed to change the state of a given mass without changing its temperature

Question 4

Specific Heat Capacity – What is the equation for change in thermal energy?

Answer 4

Change in energy = mass × specific heat capacity × temperature change

Question 5

Specific Heat Capacity – What does this equation tell you?

Answer 5

How much energy is needed to change temperature of a substance

Question 6

Gas Pressure and Volume – What is the equation linking gas pressure and volume?

Answer 6

Pressure × volume = constant

Question 7

Gas Pressure and Volume – What does this equation show?

Answer 7

Pressure increases when volume decreases (and vice versa)