Reactivity Series Flashcards

1
Q

Displacement reactions of metals

A

More reactive metals displace less reactive ones from their compound.
e.g Zinc + Copper Nitrate → Zinc nitrate + copper

Potassium, Sodium, Lithium, Calcium, Magnesium, Aluminium, CARBON, Zinc, Iron, Copper, HYDROGEN, Silver, Gold, platinum

[people say little children make a coughing zebra ill, constantly hungry sniffing giraffes]

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2
Q

Reactions of metal with water

A

metal + water → metal hydroxide + hydrogen
e.g potassium + water → potassium hydroxide + hydrogen

Potassium: violently
Sodium: very quickly
Lithium: quickly
Calcium: more slowly

Magnesium reacts with steam

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3
Q

Reactions of metals with dilute acid

A

Product is a salt and hydrogen
e.g magnesium + sulphuric acid → magnesium sulphate + hydrogen

Magnesium: instantly
Aluminium: (hard to place as protective oxide layer makes it less reactive)
Zinc: more slowly 
Iron: slower than zinc
Copper: very slowly 

some metals do not react at all

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4
Q

Reactions of metals with oxygen

A

Product is a metal oxide
e.g magnesium + oxygen → magnesium oxide
2Mg + O2 → 2MgO

  • Potassium, Sodium, Lithium reacts with oxygen very quickly
  • Calcium, Magnesium reacts less quickly
  • Metals like Copper reacts very slowly and needs to be heated continously
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5
Q

Under what conditions does iron rust?

What kind of reaction is this?

A

When it comes in contact with Oxygen + Water

This is an oxidation reaction:
Iron + oxygen + water → hydrated iron oxide

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6
Q

Why is the rusting prevented by grease, oil, paint, plastic and galvanising?

A

Because the metal has a protective layer over it and does not come in contact with air/water

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7
Q

What is oxidation?

A

Addition of oxygen

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8
Q

What is reduction?

A

Removal of oxygen

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