Reactions of metals

What metals react vigorously with cold water?
Alkali metals
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What gas is given off in each reaction?
Hydrogen
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When does the speed of the reaction increase in groups?
Increases as you go down the group
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Give 3 alkali metals?
Lithium, Potassium and Sodium
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What happens to llithium when put in water?
Floats, fizzes steadily until it dissapears
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Where do the metals have to be in the reactivity series to react with dilute acids?
Above hydrogen
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When metals react with dilute acids what does it make?
Salt + Hydrogen
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What 3 metals react the most with acids?
Potassium, Sodiuma and Calcium
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What do you know when you hold a lit splint to a test tube and hear a squeaky pop?
That there is hydrogen
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What happens to the chemical formula when acids react with metals?
If the metal is more reactive than hydrogen it will take its place in the acid
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When metals react with oxygen what does it make with an example?
Metal oxides E.G magnesium + oxygen = magnesium oxide
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Are metal oxides acid or alkaline?
Alkaline because they have a pH higher than 7
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When non metals react with oxygen what do they make?
Oxides
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Are non metal oxides acid or alkaline?
Acid because they have a pH lower than 7
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What will metal oxides react with to make salt and water?
Acid and non metals alkali
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What is the reactivity series ( in order) ?
Potassium, Sodium, Calcium, Magnesium, Aluminium, Carbon, Zinc, Iron, Lead, Hydrogen, Copper, Silver, Gold
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Which 2 metals are usually found in pure form?
Silver and Gold
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What happens in a displacement reaction?
A more reactive metal will displace a less reactive metal from its compound.
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Give an example of a displacement reaction?
Magnesium in a solution of copper sulphate, magnesium will take the place of copper creating magnesium sulphate
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What happens in a Endothermic reaction?
Heat is taken in
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What happens in a Exothermic reaction?
Heat is given out
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What do catalysts do?
Increase the speed of reaction.
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What happens to the atoms ina chemical reaction?
Bonds get broken and made in the reaction as atoms rearrange themselves
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Other cards in this set

Card 2

Front

What gas is given off in each reaction?

Back

Hydrogen

Card 3

Front

When does the speed of the reaction increase in groups?

Back

Preview of the front of card 3

Card 4

Front

Give 3 alkali metals?

Back

Preview of the front of card 4

Card 5

Front

What happens to llithium when put in water?

Back

Preview of the front of card 5
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