Daily Practice · GCSE Science

Daily Practice - GCSE Science

6th November 1997

5 questions · GCSE · 584 questions in this band

1
Rate and Extent of Chemical Change
A reaction between calcium carbonate and hydrochloric acid produces 72 cm3 of carbon dioxide gas in 30 seconds. Calculate the mean rate of reaction.
2
Rates of Reaction
State the condition, in terms of energy, that colliding particles must meet for a reaction to occur.
3
Reversible Reactions and Equilibrium
State the two named reactants used in the Haber process.
4
Organic Chemistry
Hexadecane (C16H34) is cracked to produce dodecane (C12H26) and one other product. Calculate the molecular formula of the other product.
5
Alkanes, Alkenes and Crude Oil
Name the alkene with the molecular formula C4H8.

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