Daily Practice - 13+ Common Entrance
Common Entrance english, maths and science.
23rd October 2020
- 1Chemistry: Acids, Reactions and the Periodic Table
Name the acid that produces nitrate salts.
- 2Chemistry: The Periodic Table and Separating Mixtures
State whether reactivity increases or decreases going down Group 1, the alkali metals.
- 3Chemistry: Reactions, Energy and Rates
Explain, using collision theory, why crushing a solid into a powder increases the rate of reaction.
- 4Chemistry: 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.
- 5Physics: Forces and Energy
In a tug of war, Team X pulls with a force of 640 N and Team Y pulls with a force of 590 N in the opposite direction. Calculate the resultant force acting on the rope.
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