AQA · Chemistry · 8462
GCSE Chemistry: Properties of metals and alloys
Bonding, structure, and the properties of matter · AQA GCSE Chemistry (8462), specification point 4.2.2.7. Cards are generated from the exam board's own specification for "Properties of metals and alloys", and every card links back to the page it came from. Specification © AQA — used with attribution.
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What type of structure do metals have?
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Giant structures of atoms held together by strong metallic bonding.
Why do most metals have high melting and boiling points?
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Their giant structures are held together by strong metallic bonds, which need a lot of energy to break.
Metals have giant structures of atoms with strong ? bonding.
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metallic
How are atoms arranged in a pure metal?
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In regular layers.
Why can pure metals be bent and shaped?
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Their atoms are arranged in layers that can slide over one another.
Why are pure metals mixed with other metals to make alloys?
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Pure metals are too soft for many uses; alloys are harder.
What is an alloy?
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A mixture of a metal with one or more other metals (or elements).
Why are alloys harder than pure metals?
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Atoms of different sizes distort the regular layers, so the layers cannot slide over each other as easily.
Alloys are harder than pure metals because the different-sized atoms ? the layers of atoms.
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distort
Which are generally harder: pure metals or alloys?
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Alloys.
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