Chemistry · 101 short exam-question games.

GCSE Chemistry

Both answers say the alloy is harder. Only one explains what stops the layers sliding.

3 marks

A bicycle frame is made from an aluminium alloy instead of pure aluminium. Explain why the alloy is harder.

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Curriculum

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What does a constant mass prove?

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Which way does higher pressure move equilibrium?

Can one “green” feature settle a life-cycle comparison?

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Why does a pure metal bend more easily?

Why does a concentrated solution react faster?

Why do compressed gases react faster?

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Which coefficient controls the product mass?

How do you measure dissolved solids in water?

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Can you balance electrode half equations?

What does a warmer neutralisation mixture show?

Why does an instant cold pack get colder?

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Can one flame colour hide another ion?

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What if both equilibrium sides have equal gas totals?

When does a reusable bottle have lower impact?

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Does crossing a melting point make a gas?

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Which forces yield when a molecular liquid boils?

What blocks the layers inside a harder alloy?

Which charge carrier moves through a metal strip?

Does using less nanoparticle coating settle the decision?

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Which way round should the mass ratio go?

When do mole amounts become whole-number coefficients?

Which reactant actually runs out first?

Does concentration already give the solute mass?

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Will sulfate make sulfur at the anode?

Which oxygen change happens inside the kiln?

Which interval gives the activation energy?

Should three cell voltages be added or divided?

Which power system meets both depot limits?

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Does a catalyst supply the missing energy?

How can changing conditions reveal a reverse reaction?

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Why can compression leave an equilibrium mixture unchanged?

Can a carbon-and-hydrogen compound fail the alkane test?

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