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chemistry year 10 > The Reactivity Series of Metals > Flashcards

The Reactivity Series of Metals Flashcards

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1
Q

Complete:
In order to allow the metals to react with oxygen, we simply burn them in ______ which contains ________ oxygen.

A

AIR which contains 20% oxygen

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2
Q

What word do chemists sometimes use instead of ‘burning’?

A

Combustion

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3
Q

complete the general equation for a metal burning in oxygen:
METAL + OXYGEN ……..

A

METAL OXIDE

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4
Q

Which 2 metals react easily with cold water?

A

Potassium and sodium

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5
Q

Describe how sodium (Na) reacts in water.

A

Fizzes, floats, moves around surface of water.
Melts and forms a ball, disappears, colourless solution forms.

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6
Q

Describe how Potassium (K) reacts in water.

A

Same a sodium PLUS:
burns with a lilac flame, popping sound at end

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7
Q

Potassiums and Sodium are stored in oil. Why?

A

To prevent a reaction with moisture and oxygen in air.

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8
Q

Na and K are easily cut (soft metals) but tarnish rapidly in air.
TRUE or FALSE

A

TruThinke

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9
Q

Consider the experiment to look at the reaction of calcium with cold water.
What were the immediate observations?

A

Calcium sinks and rises
Fizzes
Ca disappears
Test tube warms up
Filtrate is a colourless solution

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10
Q

experiment: reaction of calcium with cold water

What does the gas burn with?

A

A pop

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11
Q

Experiment: calcium and cold water

What colour does the filtrate turn pH paper?

A

Blue - alkali formed

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12
Q

Experiment: calcium and cold water
What colour is the solution and what is the solouton known as?

A

solution turns milky.
Known as LIME WATER

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13
Q

Which gas burns with a POP?

A

Hydrogen

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14
Q

Complete the equation:

Calcium + water …….

A

Calcium hydroxide + hydrogen

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15
Q

complete:

Sodium + water …..

A

sodium hydroxide + hydrogen

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16
Q

Magnesium reacts VERY SLOWLY with cold water.
How could you speed this reaction up in an experiment?

A

REpalce the cold water with steam.

17
Q

Copper does not react with water or steam.
TRUE or FALSE

A

TRUE

eg. copper pipes, copper roof

18
Q

Which 2 metals are TOO reactive with acids?

A

sodium and potassium

19
Q

Which metal does NOT react with acid? Why?

A

ALUMINIUM, it is permanetely coated with a proective layer of aluminium oxide so it does not show its true reactivity.

20
Q

What is the general equation for a metal and an acid?

A

Metal + Acid —- Salt + Hydrogen

21
Q

The name the salt produced depends on thr acid used. Salts of hydrochloric acid are called ______?

A

CHLORIDES

22
Q

What happens in a ‘displacememet reaction’ ?

A

A more reactive metal will displace a less reactive metal from a compound.

chemistry year 10 (6 decks)

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