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Chemistry > C1 Topic 3&4 > Flashcards

C1 Topic 3&4 Flashcards

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0
Q

Carbonate + Acid –>

A

Salt + H2O + CO2

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1
Q

Base + Acid –>

A

Salt + H2O

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2
Q

Metal + Acid –>

A

Salt + Hydrogen

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3
Q

3 types of acids as symbols

A
  • HCl
  • HNO3
  • HSO4
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4
Q

Why does the stomach produce HCl?

A

To help with digestion - the enzymes work best in acidic environments
Also kills bacteria - no food poisoning

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5
Q

What is indigestion and how is it dealt with?

A

Too much HCl in the stomach

Indigestion tablets contain bases to neutralise the acid such as Calcium Carbonate

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6
Q

Metal oxides and Hydroxides produce what when reacted with acid and why?

A

Salt and H2O because they’re bases and the acid neutralises it

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7
Q

Symbol for
Calcium Oxide
Sodium Oxide
Potassium Oxide

A

CaO
NaO
KO

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8
Q 
Symbol for
Magnesium Hydroxide
Lithium Hydroxide
Iron Hydroxide
Potassium Hydroxide
A

Mg(OH)2
LiOH
Fe(OH)2
KOH

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9
Q

State of most metal oxides

A

Solid

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10
Q

State of most Hydroxides

A

Aqueous

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11
Q

Test for chlorine

A

Turns DAMP blue litmus paper red then bleaches it white

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12
Q

Test for hydrogen

A

Squeaky pop lit splint in test tube

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13
Q

Test for CO2

A

Turns limewater cloudy

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14
Q

Test for Oxygen

A

Re-lights glowing splint

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15
Q

Electrolysis of table salt produces…

A

Chlorine

16
Q

Three uses of chlorine…

A

Manufacture of bleach
Make poly(chlorethene) aka PVC
Treat water supplies

17
Q

Electrolysis of water produces

A

Hydrogen and Oxygen

18
Q

The positive rod in electrolysis is called

A

ANODE

19
Q

Negative rod in electrolysis is called

A

Cathode

20
Q

Cations - Anions

A

Positive - Negative

21
Q

What are most metals found as

A

Ores

22
Q

Pure metals when dug up

A

Gold is not reactive so it is by itself when you dig it up

23
Q

Where are ores found

A

In the earths crust

24
Q

What is an ore

A

A natural compound containing enough metal to make it worthwhile extracting

25
Q

Reactivity series

A 
Potassium 
Sodium
Calcium
Magnesium
Aluminium
Zinc
Iron
Tin
Lead
Copper 
Silver
Gold
Platinum
26
Q

Metals in the reactivity series that have to be extracted by electrolysis

A 
Potassium
Sodium
Calcium
Magnesium
Aluminium
27
Q

Metals that can be extracted by heating with carbon

A

Zinc
Iron
Tin
Lead

28
Q

Oxidisation

A

Gain of oxygen

Formation of metal ores

29
Q

Reduction

A

Loss of oxygen

Extraction of metal

30
Q

Oxidisation of magnesium

A

2Mg + O2 –> 2MgO

31
Q

Reduction of Copper

A

2CuO + C –> 2Cu + CO2

32
Q

Haematite

A

Iron ore

33
Q

Bauxite

A

Aluminium ore

34
Q

Cinnabar

A

Mercury ore

35
Q

Galena

A

Lead ore

36
Q

Malachite

A

Copper ore

37
Q

Nitinol is an alloy of

A

Nickel and Titanium

Chemistry (4 decks)

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