Study

Evaporation and Condensation

  •   0%
  •  0     0     0

      Back   Restart
  • Condensation describes a change of state in matter. Which change is it?
    Solid changing into gas
    Liquid changing into gas
    Gas changing into liquid
  • Where does evaporation take place in a liquid?
    At the bottom only
    At the surface
    In the middle only
  • What happens to temperature during condensation?
    Heat is absorbed
    No heat change
    Heat is released
  • Which of the following is an example of condensation?
    Water droplets forming on a cold glass
    Water boiling into steam
    Ice melting into water
  • Why does fog form in the early morning?
    Water freezes in the air
    Water vapour cools and condenses
    Water evaporates quickly
  • During condensation, particles
    Gain energy and spread apart
    Stay the same
    Lose energy and move closer
  • Why do droplets form outside a cold can?
    Liquid evaporates
    Water vapour condenses
    Solid melts
  • Which surface allows faster evaporation?
    Wide shallow dish
    Narrow tall bottle
    Closed container
  • Which factor does NOT affect evaporation?
    Colour of the container
    Temperature
    Wind speed
  • What state of matter is water vapour?
    Gas
    Liquid
    Solid
  • Which of the following involves loss of heat?
    Evaporation
    Condensation
    Boiling
  • What happens to water molecules during evaporation?
    They stop moving
    They lose energy and slow down
    They gain energy and move faster
  • Why does a puddle disappear after rain?
    Water sinks into the sky
    Water evaporates into the air
    Water turns into ice
  • Which change is a physical change?
    Burning of paper
    Evaporation of water
    Rusting of iron
  • Which factor slows down evaporation?
    Strong wind
    High temperature
    High humidity
  • What happens to energy during evaporation?
    Heat is absorbed
    No energy change
    Heat is released
  • Which condition will cause clothes to dry faster?
    Windy day
    Humid day
    Cold and still air
  • Which process changes water vapour into tiny water droplets?
    Evaporation
    Melting
    Condensation
  • Which factor increases the rate of evaporation?
    Higher temperature
    No heat
    Lower temperature
  • Which of the following is condensation in nature?
    Ice melting
    River flowing
    Cloud formation
  • Which weather condition increases evaporation?
    Hot and dry weather
    Cold and wet weather
    Freezing temperature
  • Which statement about evaporation is correct?
    It only happens in sunlight
    It only happens at boiling point
    It can happen at any temperature
  • Evaporation describes a change of state in matter. Which change is it?
    Solid changing into liquid
    Gas changing into liquid
    Liquid changing into gas
  • What forms when water vapour cools high in the sky?
    Rocks
    Clouds
    Smoke
  • Why does evaporation cause cooling?
    High energy particles escape
    Low energy particles escape
    No particles escape
  • What happens to air when water vapour condenses?
    It becomes warmer
    It becomes colder
    It disappears
  • Why does sweating cool the body?
    Sweat evaporates and absorbs heat
    Sweat condenses and releases heat
    Sweat freezes on skin
  • During evaporation, particles are
    Not moving
    Moving closer together
    Moving farther apart
  • When steam touches a cold mirror
    Evaporation occurs
    Freezing occurs
    what happens?
    Condensation occurs
  • What is needed for condensation to occur?
    Cooling of gas
    Heating of liquid
    Adding salt
    • Your experience on this site will be improved by allowing cookies.