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Properties of matter, Physical & Chemical Change

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  • Which solid will have liquid state at 75 degree Celsius?
    Solid C and Solid D
  • The temperature at which a substance changes from solid state to liquid state is known as.....
    Melting point
  • We can change the state of a substance by....
    adding and removing heat
  • The picture shows the process of....
    boiling
  • In photosynthesize, water and carbon dioxide react and produce oxygen and glucose. The reactants on the reaction are....
    water and carbon dioxide
  • Based on the ability to conducting heat, wood, rubber and plastic classified as....
    Thermal insulator
  • Solid has definite shape, indefinite volume and indefinite mass. What is the correct statement?
    Solid has definite shape, definite volume, and definite mass
  • Boiling occurs at all temperatures, while evaporation occurs when liquid reaches a certain temperature.Is the statement true or false?
    false
  • in a glass of salt water, ... is solute and ... is solvent.
    SALT is solute, WATER is solvent
  • Three evidence that chemical reactions have taken place are....
    A gas being produced, a change in colour, a change in temperature
  • A physical change is any change in.... (3 things)
    size, shape, state
  • The process by which a solute is mixed with a solvent called....
    Dissolving
  • Any material that does not allow electric current to pass through it called ....
    Electrical insulator
  • in the lower temperature of solvent, the solute will dissolve faster. Is the statement true or false?
    false
  • The ability to conduct heat called....
    Thermal conductivity
  • The picture shows the process of....
    evaporation
  • The temperature at which a substance changes from liquid state to gaseous state is known as ....
    boiling point
  • The similarity of boiling and evaporation is....
    both process involve a change of state from liquid to gas
  • Chemical reactions involve substances known as ... and new substances formed known as ....
    reactants, products
  • The picture shows ..(chemical/ physical).. changes that ..(reversible/ irreversible)..
    physical, irreversible
  • The picture shows ..(physical/chemical).. change that are ..(reversible/irreversible)..
    physical, reversible
  • when we burn a paper, the white colour turn to black. It is an example of chemical changes because....
    the colour change / new substance (ashes) formed
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