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Natural Science Matter 6

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  • True or False: In physical change the original matter stays the same and new substances are made
    False
  • They can change their shape and their volume
    gases
  • True or False: Liquids can change their shape but not their volume
    True
  • True or False: Combustion happens when substances are burned. It needs oxygen and it produces a new substance called ash.
    true
  • A homogeneous mixture in which one of the substances is a metal.
    alloy
  • True or False: Pure substances are made up of just one type of matter.
    true
  • True or False: Eco friendly fleece is soft, light and warm. It is not a great insulator
    False
  • ______ is used to separate solids from liquids in homogeneous mixtures or solutions
    Evaporation
  • True or False: Filtration is used to separate solids from liquids or solids with different sized particles
    True
  • In this mixture we cannot see the separate substances
    homogeneous
  • True or False: Evaporation is used to separate liquids that have different boiling points
    False
  • True or False: In heterogeneous mixtures we can´t see the separate substances
    False
  • True or False: Recycled cotton fibre is made from cotton figbres of old jeans and t-shirts
    True
  • it behaves like plastic but it is biodegradable
    shrilk
  • When a gas changes directly into a solid without changing first into a liquid it is...
    reverse sublimation
  • When a substance gains oxygen and a new substance called rust is produced this is called
    oxidation
  • It is incredibly strong, and light. It is used to make solar cells and electronic components
    Graphene
  • It can´t change its shape nor its volume. It´s a ......
    solid
  • True or False: Chemical reactions create chemical changes in matter. These changes are reversible
    False
  • When gas changes into liquid it is called...
    condensation
  • A solution is a...
    homogeneous mixture of a solid dissolved in another substance
  • When a solid substance changes into a liquid it is....
    melting
  • True or False: Fermentation is a chemical reaction caused by living beings.
    True
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