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OCR June 2018 paper 2
By Phoenix Hoyle
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Last updated 10 months ago
15 questions
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Note from the author:
Instructions
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Carbon dioxide
Carbon monoxide
Hydrogen
4H^+ ⟶ 2H_2
H_2O ⟶ 2H^+ + O^{2-}
H^+ + OH^− ⟶ H_2O
Nanoparticles are much smaller than atoms.
Nanoparticulate materials can be used as catalysts.
Nanoparticulate materials have an extremely large surface area to volume ratio.
Ethanol is an ionic compound.
The forces of attraction between ethanol molecules are strong.
The forces of attraction between ethanol molecules are weak.
CH_4
CO_2
H_2O
Electrons are transferred from one atom to another.
Electrons are delocalised.
Consists of just one element or compound
Has a low melting point
Is a mixture of two or more substances
Alumina
Glass
Pencil line
The difference between the energy of the reactants and the products
The energy needed for a reaction to start
The energy of the products
The acid is completely ionised in solution in water.
The acid is partially ionised in solution in water.
There is a large amount of acid and a small amount of water.
Oxygen is given off.
The magnesium melts.
The magnesium is oxidised to magnesium oxide.
The gain of oxygen and the gain of electrons by a substance
The gain of oxygen and the loss of electrons by a substance
The loss of oxygen and the gain of electrons by a substance
He developed the idea of a nuclear atom.
He developed the plum-pudding model of the atom.
He stated that atoms were like tiny solid balls.
0.07 nm
0.40 nm
50 nm
Electrons are transferred from hydrogen atoms to carbon atoms.
The covalent bonds in methane are weak.
The force of attraction between methane molecules is weak.