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WorksheetsDisplacement reactions/redox/electron transfer
Total questions: 20
Worksheet time: 10mins
The formula of copper II oxide is....
Cu2O
CuO
CuO2
Cu2O2
Reactions between metals and metal oxides are often called......
Competition reactions
Combustion reactions
Corrosion reactions
Complex reactions
What colour is MgO
Black
Silver
White
Blue
What is the mixing compound in the reaction below
Mg + ? = MgO + Cu
copper oxide
carbon dioxide
copper
carbon
Why is the reaction between magnesium and copper oxide known as the thermite reaction?
It is a displacement reaction
Magnesium is less reactive than copper
It releases heat
It forms copper
Why is carbon included in the reactivity series?
It is more reactive than copper
It acts as a metal
It is used to extract metals
It conducts electricity
Oxidation is the .........
Gain of electrons
Gain of ions
Loss of oxygen
Gain of oxygen
A reaction where oxidation and reduction happens is a....
replacement reaction
displacement reaction
redox reaction
competition reaction
An oxidising agent is one that......
Gets oxidised
Oxidises something else
Does not get reduced
Acts as the reducing agent
Can a reducing agent also be oxidised too?
Sometimes
Never
Rarely
Always
Which of the following is an ionic compound?
CuO
O2
Cu
Mg
How does an Mg atom turn into an Mg ion?
It loses an electron
It loses two electrons
It gains two electrons
It gain an electron
OILRIG is what type of helpful way of remembering something....
Pseudonym
Pyrotechnic
Mnemonic
Pneumonia
Which is a salt?
Copper oxide
Copper sulphate
Copper hydroxide
Copper
Why are sulphate ions (SO4 2-) known as spectator ions in the following equation:
Zn + CuSO4 = ZnSO4 + Cu
They balance on both sides
They are unchanged on both sides
They are not needed in the reaction
They change on both sides of the reaction
Why is Zn not an ionic substance?
It is a metal
It contains no neutrons
It has only electrons
It is a metal and only consists of atoms
Copper chloride, copper nitrate and copper sulphate are all.....
Salts
Soluble
Solvents
Slightly salty
Zn (s) = Zn 2+ (aq) + 2e shows that.....
Zinc has been reduced
Zinc has been oxidised
It is a redox reaction
Zinc is a metal
A half equation is one that.......
Only shows half of an equation
Shows reduction
Shows either reduction or oxidation
Shows everything in a redox reaction
An oxidising agent oxidises something by.....
Taking away electrons
Taking away protons
Adding electrons
Removing oxygen
