Daily Practice

GCSE Science

5th March 1986

5 questions · GCSE · 584 questions in this band

1
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.
2
Rates of Reaction
Explain why using a light sensor and data logger is more reliable than timing by eye in the disappearing cross practical.
3
Reversible Reactions and Equilibrium
In the Haber process, N2(g) + 3H2(g) -> 2NH3(g), state the effect of decreasing the pressure on the position of equilibrium.
4
Organic Chemistry
Define the term 'hydrocarbon'.
5
Alkanes, Alkenes and Crude Oil
Describe the colour change seen when an alkene is shaken with bromine water.

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