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Chemistry > Chemical Reactions > Flashcards

Chemical Reactions Flashcards

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1
Q

Metals react with oxygen to form…?

A

Metal oxides

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2
Q

Name a metal that will burn in oxygen

A
  • Sodium
  • Magnesium
  • Aluminium
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3
Q

Name a metal that will slowly tarnish but does not burn.

A

Silver

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4
Q

Name a metal that doesn’t react with oxygen

A

Gold

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5
Q

Oxidation is when oxygen is…?

A

Gained

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6
Q

Reduction is when oxygen is…?

A

Removed

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7
Q

When reduction and oxidation are occurring together, it is called…?

A

Redox

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8
Q

What gas is released when metals react with water?

A

Hydrogen

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9
Q

Why is gold usually found as a pure metal in the Earths crust?

A

Because they are unreactive

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10
Q

How are most metals found in the Earths crust?

A

As metal oxides in rocks known as ores

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11
Q

What is ‘Slag’

A

Bits of unwanted rock

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12
Q

Name 2 reasons why Carbon is used to extract iron from iron oxide.

A

1) It is more reactive than iron but not dangerously reactive
2) It is readily available
3) it is Cheap!

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13
Q

Alkalis are metal hydroxides that………in water.

A

Dissolve

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14
Q

Finish the equation:

Hydrochloric Acid + Potassium hydroxide –>

A

Potassium chloride + Water

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15
Q

Bases usually refer to insoluble compounds that can neutralise an acid. Most metal ______ and insoluble __________ are based.

A

1) Oxides
2) Hydroxides

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16
Q

Finish the equation:

Copper oxide + sulphuric acid —>

A

Copper sulfate + water

17
Q

Name 2 examples of salts

A

1) sodium Chloride
2) Magnesium Nitrate
3) Zinc Sulfate

18
Q

Hydrochloric acid gives a

A

Chloride ending

19
Q

Sulphuric acid gives a

A

Sulfate ending

20
Q

Nitric acid gives a

A

Nitrate ending

21
Q

Metal carbonates can be used to neutralise acids, to produce a ____, _____ and ______ _______ gas

A

1) Salt
2) Water
3) Carbon Dioxide

22
Q

What is the range of PH for Acids

A

0-6

23
Q

What is the range of PH for Alkalis

A

8-14

24
Q

What PH is neutral

A

7

Chemistry (4 decks)

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