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4
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A reaction where a more reactive element takes the place of a less reactive element in a compound.
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5
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A list of metals in order of reactivity with the most reactive at the top.
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6
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A reaction in which a metal reacts with air and sometimes water to form a metal oxide or hydroxide.
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7
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The process in which energy transferred by a direct electrical current decomposes electrolytes.
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8
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The reaction between iron, air and water to form hydrated iron(III) oxide (rust).
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9
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A process in which a metal is obtained from its ore.
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10
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A dull film on a metal’s surface.
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11
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A rock that contains a high concentration of a metal or metal compound.
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14
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A metal that occurs uncombined with any other element.
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