Chemistry

9th

grade

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Extraction of Metals

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  • Multiple Choice
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    30 seconds
    1 pt

    What is an ore?

    a solid metal

    a rock containing a metal combined with other elements, often oxygen

    an element

    an object used to row a boat

  • Multiple Choice
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    45 seconds
    1 pt
    Image

    Which of these elements are unlikely to be found uncombined in the earth's crust?

    gold

    potassium

    aluminium

    silver

  • Multiple Choice
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    30 seconds
    1 pt
    What is the removal of oxygen from a substance called?
    reduction
    extraction
    electrolysis
    oxidation
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