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Chemistry > Reactivity Series > Flashcards

Reactivity Series Flashcards

1
Q

What is the reactivity series

A

It is a list of metals where the most reactive at the top and the least reactive at the bottom

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2
Q

List the reactivity series

A 
Potassium 
Sodium
Lithium
Calcium
Magnesium 
Aluminium 
Zinc
Iron
Copper 
Silver
Gold
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3
Q

Potassium + oxygen goes to what

A

Potassium oxide

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4
Q

What is the general equation for metal with oxygen

A

Metal+oxygen goes to metal oxide

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5
Q

All reaction need some heat to start reacting what is the called

A

Activation energy

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6
Q

What is the word for when a metal gains oxygen

A

Oxidised

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7
Q

What does metal oxide + water go to

A

Metal hydroxide

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8
Q

What is the solubility of
Metal nitrate
Metal sulphate
Metal chloride

A

All soluble
All except for ca,ba,pb
All soluble except for pb and ag

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9
Q

Where does hydrogen come in the reactivity series

A

It comes between lead and copper

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10
Q

Why is hydrogen not on the reactivity series

A

Because hydrogen is not a metal

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11
Q

What is the general word equation for a metal (above hydrogen) reacts with acid

A

Metal + acid goes to metal salt + hydrogen

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12
Q

Balance this equation (think of the groups on the periodic table)

Sodium + oxygen goes to sodium oxide

A

Na+O2 goes to Na2O

4Na+O2 goes to 2Na2O

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13
Q

What type of reaction is this

Iron+copper(2)nitrate goes to iron(2)nitrate + copper

A

It is a displacement reactions where a less reactive metal compound and a more reactive metal react and the more reactive metal turns into a metal compound and the less reactive metal is no longer a compound

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14
Q

Rusting is the name given to what metal corroding

A

Iron

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15
Q

Oxygen and what are both required for iron to rust

A

Water

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16
Q

Write a word equation for rust

Then balance it

A

Iron + oxygen +water goes to hydrated iron(3)oxide

2Fe + 1 1/2 O2 +xH2O goes to Fe2O3XH2O

17
Q

How do you stop rusting

A 
Alloying
Sacrificial protection
Galvanising 
Painting 
Plastic coating 
Oil and grease 
Tinning 
Electroplating
18
Q

What is galvanising

Name 2 advantages

Name 2 disadvantages

A

Is means it is dipped in molten zinc so the zinc corroded instead of the iron

Long lasting

Iron can be exposed to air and water without rusting

Expensive
Appearance is dull

19
Q

What is alloying

Name 2 advantages

Name 2 disadvantages

A

Mixes molten iron with chromium oxide to make stainless steel

Last for life time of steel

Gives good shiny finish

Expensive

Chromium is rare

Chemistry (6 decks)

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