Daily Practice - 13+ Common Entrance
Common Entrance english, maths and science.
7th March 2015
- 1Biology: Respiration, Digestion and Gas Exchange
Name the enzyme that digests starch, and state the product it is broken down into.
- 2Chemistry: Materials
A pupil finds the volume of an irregular stone using a measuring cylinder. The water level rises from 35 cm^3 to 52 cm^3 when the stone is added. The stone has a mass of 42.5 g. Calculate the density of the stone, giving your answer to 2 significant figures.
- 3Chemistry: Acids, Reactions and the Periodic Table
Name the acid that produces nitrate salts.
- 4Chemistry: The Periodic Table and Separating Mixtures
State whether reactivity increases or decreases going down Group 1, the alkali metals.
- 5Chemistry: Reactions, Energy and Rates
Explain, using collision theory, why crushing a solid into a powder increases the rate of reaction.
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