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Chemistry > Metals Y8 > Flashcards

Metals Y8 Flashcards

1
Q

What type of metals is group 1

A

Alkali metals

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2
Q

What is the reactivity series in order?

A

Most reactive
Potassium
Sodium
Lithium
Calcium
Magnesium
Aluminium
Carbon
Zinc
Iron
Lead
Hydrogen
Copper
Silver
Gold

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3
Q

How do you test for hydrogen?

A

Put a little splint in the test tube and if it makes a squeaky pop there’s hydrogen

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4
Q

Do metals have high or low boiling and melting points?

A

High

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5
Q

When cut metals are…

A

Shiny and soft

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6
Q

The further down in group 1 you go the do they get more or less reactive.

A

More

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7
Q

When alkali metals mix with water, what do they produce ?

A

A metal hydroxide+hydrogen

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8
Q

Write the equations for:
Lithium +water
Sodium +water
Potassium +water

A

Lithium+water—> lithium hydroxide +hydrogen
Sodium+water —> sodium hydroxide+ hydrogen
Potassium+water—> potassium hydroxide +hydrogen

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9
Q

When group 1 metals react with water what do they form?

A

An alkaline solution

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10
Q

What else other than the metal hydroxide is produced when group 1 metals react with water?

A

Hydrogen

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11
Q

What type of metals are in group 2?

A

Alkaline earth metals

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12
Q

What do metals have to be higher than in the reactivity series to react with water?

A

Carbon

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13
Q

Do salts have a charge?

A

they are neutral

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14
Q

Where are alkali metals stored?

A

In oil as they can react with air

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15
Q

Are all reactants on the reactivity series alkali metals?

A

No

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16
Q

What do alkali metals do when they react with water?

A

Effervess and if high in reactivity series can spark or move violently.

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17
Q

What colour does the universal indicator turn when mixed with group 1 metals?

A

Purple

18
Q

What’s produced when metal+acid

A

Metal+acid—> salt + hydrogen

19
Q

What are the names of these salts:
Hydrochloric
Sulphuric
Nitric

A

Chloride
Sulfate
Nitrate

20
Q

What’s the equations for:
Zinc+nitric acid
Iron+sulphuric acid
Magnesium+hydrochloric acid

A

Zinc+nitric acid —> zinc nitrate +hydrogen

Iron+sulphuric acid—> iron sulfate + hydrogen

Magnesium+hydrochloric acid—> magnesium chloride + hydrogen

21
Q

More effervessing= more reactive

A
22
Q

What is the displacement reaction equation?

A

More reactive metal+ less reactive metal compound —>more reactive metal compound+less reactive metal

23
Q

What is a displacement reaction?

A

When a more reactive metal takes the place of the less reactive metal in a compound .

24
Q

What is the equation for these displacement reactions?:
Zinc+copper sulfate
Magnesium+ zinc sulfate
Magnesium + iron sulfate

A

Zinc+copper sulfate —> zinc sulfate+ copper

Magnesium+ zinc sulfate—> magnesium sulfate+ zinc

Magnesium + iron sulfate—>magnesium sulfate+ iron

25
Q

What are the reagents for the thermite reaction?

A

Aluminium and iron oxide

26
Q

What does magnesium act as in the thermite reaction?

A

Magnesium acts like as a fuse with the igniter mixture provide the energy needs for the reaction to take place

27
Q

How does thermite reaction help to weld railways tracks?

A

When the iron is produced it is molten du pe to the high reaction temperature though it is dangerous and expensive

28
Q

What is an example of displacement reaction?

A

Thermite reaction

29
Q

What does it mean if a metal is over hydrogen in the reactivity series?

A

That metal can react with acids

30
Q

What does it mean if a metal is over carbon on the reactivity series?

A

That metal can react with water

31
Q

What is oxidation?

A

If a substance has gained oxygen it has been oxidised

32
Q

What is reduction?

A

If a substance has lost oxygen it has been reduced

33
Q

Complete the equations then say whichsubstances have been oxidised?
Sodium+silver oxide
Lead+ gold oxide

A

Sodium+ silver oxide —> sodium oxide +silver
= sodium

Lead +gold oxide—> lead oxide+gold
=lead

34
Q

What is needed to rust or corrode?

A

Needs oxygen + water

35
Q

When any metal corrodes it is called ……… and when iron corrodes it is called……

A

Corroding and rust

36
Q

Word equation for rust?

A

Iron+ oxygen —> hydrated iron oxide

37
Q

What is the barrier method?

A

Putting a barrier between the iron and the air e.g painting or oiling , rubber coating

38
Q

What is the sacrificial protection method?

A

Attaching big blocks of metal more reactive than iron or the metal, this metal corrodes in preference

39
Q

What is the galvanising method?

A

Invokes covering metal in another metal more reactive

40
Q

What is the best anti rusting method?

A

Galvanising as it is bothe sacrificial method and a barrier method

41
Q

What do matters have to be higher than in the reactivity series to react with acids?

A

Hydrogen

Chemistry (4 decks)

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