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Matter and materials

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  • The process in which a gas turns into a liquid is called...
    Condensation
  • Sea water. Homogeneous or heterogeneous mixture?
    Homogeneous mixture
  • True or false: A helium balloon has more density than the air surrounding it.
    False
  • What is mass?
    The amount of matter that an object has.
  • Which method would you use to separate a mixture in which there is an element made of metal?
    Magnetic separation
  • When two or more atoms join together, they form a...
    Molecule
  • The process in which a liquid turns into a gas is called...
    Evaporation
  • The process in which a solid turns into a liquid is called...
    Melting
  • Is it true that a solid has a definite shape and a definite volume?
    True
  • Oxidation. Physical or chemical change?
    Chemical change
  • What unit is used to measure mass?
    Grams, Kilograms, etc.
  • What instrument do we use to measure mass?
    We use a scale.
  • Which method would you use to separate a solid from a liquid?
    Filtration, evaporation...
  • Density
    the amount of matter in a specific space.
  • Which method would you use to separate the juice from the pulp in an orange juice?
    Filtration
  • What instrument do we use to measure the volume of an object?
    We use a graduetaed scale.
  • Which method would you use to separate two liquids with different densities?
    Decantation
  • What is matter?
    Everything around us. Everything that has mass and volume.
  • What is the freezing point of water?
    0ªC
  • What is the boiling point of water?
    100ºC
  • Matter with only one kind of atoms is called...
    Pure substance
  • Evaporation. Physical or chemical change?
    Physical change
  • Melting. Physical or chemical change?
    Physical change
  • What is volume?
    The amount of space that an object occupies.
  • True or false: Oil has more density than water.
    False
  • Which method would you use to separate two liquids with a different boiling point?
    Distillation
  • The name of the two kinds of mixtures
    Homogeneous and heterogeneous mixtures
  • Combustion. Physical or chemical change?
    Chemical change
  • Is it true that a liquid has a definite shape and a definite volume?
    False
  • What unit is used to measure the volume of an object?
    Millilitres, Litres, etc
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