1. Patterns of Reactivity
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Patterns of Reactivity
W Richards
Worthing High School

2. Properties of metals and non-metals
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Metals have very high melting points (which means that they are usually _____) whereas non-metals will melt at lower ___________
All metals conduct heat and __________ very well, whereas non-metals don’t (usually)
Metals are strong and ______ but bendable. Non-metals are usually _____ or they will snap.
Metals will _____ when freshly cut or scratched, whereas non-metals are usually dull
Metals have higher _______ than non-metals (i.e. they weigh more)
Metals can be used to make ______ (a mixture of different metals)
Words - alloys, electricity, solids, weak, densities, temperatures, tough, shine

3. Lesson Objective- to know how metals react with oxygen
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When a metal _____with ______it will form a METAL______. This is what happens when a metal _____ or ____.
METAL + OXYGEN METAL OXIDE
burns Mg O
OXIDE
oxygen
rusts
Copy and complete the following reactions:
Magnesium + oxygen
Copper + oxygen
Calcium + oxygen
Iron + oxygen
reacts

4. Reactions of metals with water
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When a metal reacts with water hydrogen is always given off. The other product will be either a metal hydroxide or a metal oxide.
METAL + WATER METAL OXIDE + HYDROGEN
METAL + WATER METAL HYDROXIDE + HYDROGEN
Copy and complete the following reactions:
Sodium + water
Potassium + water
Calcium + water
Iron + steam

5. Reactions of metals with acids
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METAL + ACID SALT + HYDROGEN
e.g. magnesium + hydrochloric acid magnesium chloride + hydrogen Mg H Cl
Copy and complete the following reactions:
Calcium + hydrochloric acid
Zinc + hydrochloric acid
Iron + hydrochloric acid
Lithium + sulphuric acid

6. Complete the following reactions:
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Lithium + water
Lithium + hydrochloric acid
Silver + oxygen
Magnesium + sulphuric acid
Potassium + oxygen
Aluminium + oxygen
Manganese + water
Sodium + sulphuric acid
Lithium + oxygen
Nickel + hydrochloric acid
Lithium hydroxide + hydrogen
Lithium chloride + hydrogen
Silver oxide
Magnesium sulphate + hydrogen
Potassium oxide
Aluminium oxide
Manganese oxide + hydrogen
Sodium sulphate + hydrogen
Lithium oxide
Nickel chloride + hydrogen

7. Name the following compounds:
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For example:
HS = Hydrogen sulphide
Na2CO3 = sodium carbonate
CO2
KBr HI
NaCl
CaCO3
MgCO3
MgSO4
KMnO4
Carbon dioxide
Potassium bromide
Hydrogen iodide
Sodium chloride
Calcium carbonate
Magnesium carbonate
Magnesium sulphate
Potassium permanganate

8. Increasing reactivity
The Reactivity Series
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Increasing reactivity
Potassium
Sodium
Calcium
Magnesium
Aluminium
Carbon
Zinc
Iron
Lead
Copper
Silver
Gold
The Reactivity Series lists metals in order of reactivity:

9. Displacement reactions
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A displacement reaction is one where a MORE REACTIVE metal will DISPLACE a LESS REACTIVE metal from a compound. Mg
Magnesium
SO4 Cu
Copper sulphate
The magnesium DISPLACES the copper from copper sulphate
SO4 Mg
Magnesium sulphate Cu
Copper
Magnesium + copper sulphate magnesium sulphate + copper

10. Some example reactions…
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Reaction
Prediction
Observations
Zinc + copper sulphate
Zinc + lead nitrate
Copper + lead nitrate
Copper + silver nitrate
Extension work – write down the equations for these reactions

11. Some example reactions…
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Reaction
Prediction
Observations
Zinc + copper sulphate
Reaction DID happen
Zinc + lead nitrate
Copper + lead nitrate
Reaction DID NOT happen
Copper + silver nitrate
Extension work – write down the equations for these reactions