Daily Practice

GCSE Science

7th June 1987

5 questions · GCSE · 584 questions in this band

1
Bond Energies, Cells and Fuel Cells
State whether breaking a chemical bond requires energy or releases energy.
2
Rate and Extent of Chemical Change
Explain, using collision theory, why increasing the concentration of a reactant in solution increases the rate of a reaction.
3
Rates of Reaction
State the condition, in terms of energy, that colliding particles must meet for a reaction to occur.
4
Reversible Reactions and Equilibrium
State the two named reactants used in the Haber process.
5
Organic Chemistry
Hexadecane (C16H34) is cracked to produce dodecane (C12H26) and one other product. Calculate the molecular formula of the other product.

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