Daily Practice · 13+ Common Entrance

Daily Practice - 13+ Common Entrance

21st September 1998

5 questions · Years 7-8 · 744 questions in this band

1
Chemistry: The Periodic Table and Separating Mixtures
State whether reactivity increases or decreases going down Group 1, the alkali metals.
2
Chemistry: Reactions, Energy and Rates
Explain, using collision theory, why crushing a solid into a powder increases the rate of reaction.
3
Chemistry: Metals, the Reactivity Series and Environmental Chemistry
Name the gas released when fossil fuels are burned that is the main cause of the enhanced greenhouse effect.
4
Physics: Forces and Energy
A farmer weighing 900 N stands on the ground. Her boots have a total sole area of 0.03 m^2. Use pressure = force / area to calculate the pressure she exerts on the ground, giving your answer in Pa.
5
Physics: Electricity, Magnetism and Waves
Name the circuit component whose symbol is a circle with a cross inside it.

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