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Chemistry - Mocks > C4 > Flashcards

C4 Flashcards

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1
Q

What is oxidation?

A

A reaction in which oxygen is added and electrons are lost

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2
Q

What is reduction?

A

A reaction in which oxygen is removed and electrons are gained

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3
Q

Metals + Oxygen –> ?

A

Metal oxides

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4
Q

What does copper metal with oxygen make?

A

Black copper oxide

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5
Q

Example of reduction reaction?

A

ZnO + C –> Zn + CO

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6
Q

What is a REDOX reaction?

A

A reaction where oxygen is gained or lost

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7
Q

Physical properties of metals?

A
  • High melting and boiling point
  • Good conductors of electricity and heat
  • Malleable and ductile
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8
Q

Why do metals have high melting and boiling points?

A

Many strong metallic bonds mean large amounts of heat energy are needed to overcome forces and break bonds

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9
Q

Why are metals good conductors of electricity and heat?

A

Free electrons can carry charge

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10
Q

Why are metals malleable and ductile?

A

Layers of positive ions can easily slide over one another

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11
Q

Order of elements from most to least reactive?

A
  • Potassium
  • Sodium
  • Lithium
  • Calcium
  • Magnesium
  • Aluminium
  • CARBON
  • Zinc
  • Iron
  • HYDROGEN
  • Copper
  • Silver
  • Gold
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12
Q

Mnemonic to remember reactivity series?

A

People Send Loads of Cows, Magpies, And, CUTE Zebras Into HERE. Can She Go?

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13
Q

Metal + Cold Water –> ?

A

Metal hydroxide + Hydrogen gas

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14
Q

Metal + Steam –> ?

A

Metal oxide + Hydrogen gas

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15
Q

Acids + Metals –> ?

A

Salt + Hydrogen Gas

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16
Q

Do alkali metals react with oxygen?

A

Yes

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17
Q

Metal + Oxygen –> ?

A

Metal oxide

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18
Q

Which metals react with water?

A
  • Potassium
  • Sodium
  • Calcium
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19
Q

Which metals react with acid?

A
  • Potassium
  • Sodium
  • Calcium
  • Magnesium
  • Zinc
  • Iron
20
Q

Which metals react with oxygen?

A

All on the reactivity series

21
Q

What is a displacement reaction?

A

When a more reactive metal displaces a less reactive metal by heating

22
Q

When do displacement reactions occur?

A

When the solid metal is more reactive than the metal in the compound

23
Q

What is an ore?

A

A rock that has metals chemically combined in it

24
Q

Why do unreacted elements not have to extracted chemically?

A

They are found as uncombined element

25
Q

How are metals high on the reactivity series extracted?

A

Electrolysis

26
Q

How are metals lower on the reactivity series extracted?

A

Heating by carbon to reduce them

27
Q

Only metals above — in the reactivity series will react with dilute acids

A

Hydrogen

28
Q

Products of a metal and HCL?

A

Metal chloride and hydrogen

29
Q

Metal + 2HCL –> ?

A

MetalCl2 + H2

30
Q

Products of a metal and H2SO4?

A

Metal sulfate + Hydrogen

31
Q

Metal + H2SO4 –> ?

A

MetalSO4 + H2

32
Q

Sulfuric acids + Metals –> — salts

A

Sulfate salts

33
Q

Hydrochloric acids + Metals –> — salts

A

Chloride salts

34
Q

Bases all have pH values above —?

A

7

35
Q

Acid + Base –> ?

A

Salt + Water

36
Q

If the base is a metal carbonate then:

Acid + Base –> ?

A

Salt + Water + Carbon Dioxide

37
Q

Uses of salts?

A
  • Fertilisers
  • Batteries
  • Fungicides
38
Q

Calcium ion?

A

Ca2+

39
Q

Group 7 halide ions?

A

X-

40
Q

Group 1 metals?

A

X+

41
Q

Magnesium ion?

A

Mg2+

42
Q

Phosphate ion?

A

PO4 3-

43
Q

Sulfate ion?

A

So4 2-

44
Q

Carbonate ion?

A

CO3 2-

45
Q

Hydrogen carbonate ion?

A

HCO3 -

Chemistry - Mocks (2 decks)

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