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Yr 7 Chemistry X2 > Revision > Flashcards

Revision Flashcards

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1
Q

Where are the metals in the P.T

A

On the left

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2
Q

What are Alloys

A

A mixture of metals

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3
Q

What is the reactivity series of metals

A

Potassium, sodium, calcium, magnesium, aluminium, zinc, iron, lead, copper, silver, gold

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4
Q

Which metals react with cold water

A

Potassium,sodium, calcium

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5
Q

Which metals do not react at all

A

Lead, copper, silver, gold

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6
Q

2 equations to show sodium reacting with water

A

Sodium + water -> sodium hydroxide + hydrogen

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7
Q

How do metals react with acids?

A

Metal salt + hydrogen

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8
Q

What is oxidation?

A

Reactions where oxygen is added to a substance

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9
Q

An equation to show iron rusting?

A

4Fe + 3O2 -> 2Fe2O3

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10
Q

What is reduction?

A

Where oxygen is taken away

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11
Q

What processes can help reduce the rusting of iron

A

Paint, coat in plastic, coat with oil,

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12
Q

What is a displacement reaction?

A

A displacement reaction is when a more reactive metal takes the place of a less reactant metal from a compound to form a new compound

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13
Q

Equation to show magnesium reacting with copper sulphate

A

My + CuSO4 -> MgSO4 + Cu

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14
Q

Sodium + iron nitrate ->

A

Sodium nitrate + iron

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15
Q

Zinc + copper sulphate ->

A

Zinc sulphate + copper

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16
Q

Lead + zinc nitrate ->

A

Zinc nitrate + lead

17
Q

Why is rust an example of oxidation

A

Rust reacted with the iron to make iron oxide

18
Q

What is the formula for iron oxide

A

Fe2O3

19
Q

What is rust

A

Iron oxide

20
Q

What do metals react with

A

Metals react with oxygen and water in the air to make oxides. They corrode

21
Q

What is combustion

A

Combustion is when you burn things. Only two things that are made which are carbon dioxide and water. Burning is a common name for combustion. We always use oxygen

22
Q

What is an exothermic reaction

A

An exothermic reaction gives out heat energy. The temperature rises in our surroundings

23
Q

What is an endothermic reaction

A

An endothermic reaction take sin heat an ergo from the surroundings.

24
Q

What is a decomposition reaction

A

A decomposition reaction is when it breaks something down.

25
Q

What is a catalyst

A

Something we add to a chemical reaction to speed up the process

Yr 7 Chemistry X2 (1 decks)

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