1. Khối 8
  2. Science 8
  3. Chemistry
  4. Unit 8. Mixtures
  5. More about mixtures
  • Choose the correct answer.
    Atoms of different metals
    together in alloys
    Fuse
    Bond
    Mix
    Giải thích
    The correct answer
    Mix
    Bond
    Fuse
    1/1
  • Choose the correct answer.
    Mineral water is a
    .
    Pure substance
    Gas
    Solute
    Mixture
    Giải thích
    The correct answer
    Mixture
    Pure substance
    Solute
    Gas
    1/1
  • Choose the correct answer.
    A mixture of water and sugar is called a
    .
    Liquid
    Solution
    Solvent
    Dissolve
    Giải thích
    The correct answer
    Solution
    Solvent
    Dissolve
    Liquid
    1/1
  • Complete the sentences.
    Bronze is
    than both copper and tin
    Đáp án
    Bronze is
    harder
     than both copper and tin
    Giải thích
    The correct answer
    harder
    1/1
  • Choose the correct answer.
    When salt is added to water, we say salt
    into the water
    Dissolves
    Blends
    Bonds
    Fuses
    Giải thích
    The correct answer
    Dissolves
    Fuses
    Bonds
    Blends
    1/1
  • Complete the sentences.
    A helmet made of bronze is better than the one made from copper because bronze is
    than copper
    Đáp án
    A helmet made of bronze is better than the one made from copper because bronze is
    than copper
    Giải thích
    The correct answer
    harder
    1/1
  • Choose the correct answer.
    A mixture containing ¾ copper and ¼ iron will have a melting point closer to the melting point of
    .
    Copper
    Melting point is the average of that of copper and iron
    Melting point does not depend on the amount of elements in the mixture
    Iron
    Giải thích
    The correct answer
    Copper
    Iron
    Melting point does not depend on the amount of elements in the mixture
    Melting point is the average of that of copper and iron
    1/1
  • Choose the correct answer.
    Steel contains chromium and nickel beside carbon and iron are used to make
    .
    Pens
    Cutlery
    Teapots
    Pencils
    Giải thích
    The correct answer
    Cutlery
    Teapots
    Pens
    Pencils
    1/1
  • Choose the correct answer.
    Mixtures can exist in the form of
    .
    Solid
    Gas
    All are correct
    Liquid
    Giải thích
    The correct answer
    All are correct
    Gas
    Liquid
    Solid
    1/1
  • Choose the correct answer.
    Steel is a mixture of a metal and a
    .
    Gas
    Halogen
    Non-metal
    Radioactive
    Giải thích
    The correct answer
    Non-metal
    Gas
    Radioactive
    Halogen
    1/1
  • Choose the correct answer.
    Different metals are mix together and
    to make alloys
    Melt
    Divide
    Sublimate
    Giải thích
    The correct answer
    Melt
    Divide
    Sublimate
    1/1
  • Choose the correct answer.
    Bronze contains copper and
    .
    Titanium
    Tin
    Giải thích
    The correct answer
    Tin
    Titanium
    1/1
  • Choose the correct answer.
    Metal mixtures are called
    .
    Brass
    Bronze
    Alloys
    Giải thích
    The correct answer
    Alloys
    Bronze
    Brass
    1/1
  • Your teacher asked you to determine whether a given sample of powder is pure or is a mixture.
    One way you can carry out this experiment is to compare the
    of the sample to other pure substances
    Melting point
    Smell
    Freezing
    Color
    Giải thích
    The correct answer
    Melting point
    Smell
    Freezing
    Color
    1/1

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