Solids, Liquids and Gases 02
In order to smell, particles from the object must enter your nose. These particles are gas.

Solids, Liquids and Gases 02

Understanding matter is an important part of science. This is the second of two KS2 Science quizzes on solids, liquids and gases, and it looks at many aspects - from particles and their behaviour, to which gases make up the air.

The three states of matter are solid, liquid and gas. Each of these behaves in a different way. For example, it is not possible to cut a gas or to pour a solid. Matter can change state, moving from gas to liquid or liquid to solid - and vice versa. This is because the particles in gases have more energy than those in liquids and so can move aroud much more. The particles in liquids have less energy than those in gases but more than those in gases and so move less than in gases but more than in solids. The particles in solids barely move at all. We can give energy to the particles by heating them up. That's how ice melts into water and water evaporates into steam.

Check your knowledge on the three states of matter in this science quiz.

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  1. What is water called when it is a gas?
    Water vapour is also called steam. Steam is invisible - what you see rising from a kettle or a pan is water droplets in the air
  2. Can sugar become a liquid?
    Sugar becomes liquid at around 186° C - heating sugars to such high temperatures is how sweets are made
  3. In cooler temperatures, how do the particles of any material move?
    Cooler particles have less energy
  4. A sweet fizzy drink contains what?
    Sweetened fizzy drinks contain solid (sugar), liquid (water) and gas (carbon dioxide)
  5. Which of the following describes what happens when water evaporates?
    If a particle gets enough energy it leaves the liquid. Particles like this form gases
  6. When a material is heated, what happens to its particles?
    Heat gives energy to the particles and makes them vibrate or move
  7. What is solid water called?
    When water is placed in the freezer, it becomes a solid - ice
  8. In warmer temperatures, how do particles of any material move?
    Warmer particles have more energy
  9. In order to smell, particles from the object must enter your nose. In which state of matter are these particles?
    You breathe the gas in through your nose and detect any smell which pass through
  10. Although air is made up of several gases, the two main ones are nitrogen and which other?
    Animals - including people - need oxygen to breathe!

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