How does energy transform matter? - OCR 21C test questions - OCR 21st Century

1

How do the particles in a solid move?

2

What is the equation for density?

3

The density of iron is 7.8 g/cm3. What is the mass of 5 cm3 of iron?

4

What is the density of a rock if it has a mass of 1,500 kg and a volume of 0.5 m3?

5

What is the mass of 15 cm3 of a substance that has a density of 50 g/cm3?

6

How much energy is needed to raise the temperature of 500 g of lead by 10°C? (c = 129 J/kg°C)

7

What process occurs when a liquid absorbs energy gradually from its environment to change into a gas?

8

Which part of a cooling curve shows the changes of state?

9

How much energy is needed to turn 100 g of oxygen gas into a liquid at the same temperature? L = 213,000 J/kg

10

How much energy does a kilogram of molten lead emit as it freezes if its latent heat of fusion is 22,400 J/kg?