Daily Practice - 13+ Common Entrance
Common Entrance english, maths and science.
24th February 2018
- 1Chemistry: 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.
- 2Chemistry: Acids, Reactions and the Periodic Table
State the colour universal indicator turns in a strong alkali.
- 3Chemistry: The Periodic Table and Separating Mixtures
State the name given to a horizontal row of the periodic table.
- 4Chemistry: Reactions, Energy and Rates
A reaction between magnesium ribbon and hydrochloric acid gives off heat, and the temperature of the acid rises from 20 degrees C to 35 degrees C. State whether this reaction is exothermic or endothermic, and explain how you know.
- 5Chemistry: Metals, the Reactivity Series and Environmental Chemistry
State the method used to extract aluminium from its ore, and explain why this method is needed rather than reduction with carbon.
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