EASY
Upper Secondary-IGCSE
IMPORTANT
Earn 100

State the factors that affect the rate of evaporation.

Important Questions on Thermal Properties of Matter

EASY
Upper Secondary-IGCSE
IMPORTANT

What effect does evaporation have on the temperature of a liquid?

EASY
Upper Secondary-IGCSE
IMPORTANT

Explain the difference between evaporation and boiling.

EASY
Upper Secondary-IGCSE
IMPORTANT

Explain condensation, in terms of the arrangement of water molecules.

EASY
Upper Secondary-IGCSE
IMPORTANT

Explain evaporation, in terms of the arrangement of water molecules.

EASY
Upper Secondary-IGCSE
IMPORTANT

It is said that a way to cool a bottle of milk is to make the outside surface wet and leave it in a breeze. Explain why this should work.

EASY
Upper Secondary-IGCSE
IMPORTANT

State the equation for calculating the specific heat capacity of a substance.

MEDIUM
Upper Secondary-IGCSE
IMPORTANT
Type of material Material Specific heat capacity (J/ kg °C)
metal steel 420
  aluminium 910
  copper 385
  gold 300
  lead 130
non metal glass 670
  nylon 1700
  polythene 2300
  ice 2100
liquid water 4200
  sea water 3900
  ethanol 2500
  olive oil 1970
gas air 1000
  water vapour 2020 (100 °C)
  methane 2200


State which of the metals shown in the table will require the greatest amount of energy to raise the temperature of 100 g from room temperature to 200 °C

EASY
Upper Secondary-IGCSE
IMPORTANT
You have two identical glass beakers containing equal amounts of water and seawater. You heat them using identical electrical heaters, and record their temperatures as they rise. State which temperature will rise more quickly. Explain your answer.