Steadily forming a yellow solid, turns white on cooling
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Iron burns with...
Orange sparks, forming a black solid
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Copper...
Does not burn burn but forms a black solid
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In water potassium...
Floats and moves on surface, burns with a lilac flame, effervescence, heat is released, disappears to form a colourless solution
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In water sodium...
Floats and moves on surface, melts and forms a silvery ball, effervescence, disappears to form a colourless solution, heat is released
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In water calcium...
Effervescence, sinks then rises, heat is released, disappears to form a colourless solution
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In water magnesium...
Has a very slow reaction, some effervescence
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In steam magnesium ribbon...
Burns with a bright white light, heat is released and a white solid is formed
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In steam aluminium powder...
Burns to form a white solid, heat is released
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In steam zinc powder...
Glows to form a yellow solid, changes to white on cooling, heat is released
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In steam iron powder...
Glows at red heat, forming black solid
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What is a displacement reaction?
One in which a more reactive metal forms ions and causes a less reactive metal ion to change atoms. It is often a solid metal with solution of metal ion/solid metal oxide
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Observations of a displacement reaction are...
Any colour changes in solution, release of heat, solid metal appearing
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Why is the reactivity of aluminium 'hidden'?
It has a protective oxide layer on it meaning it is unlikely to react
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