Daily Practice

13+ Common Entrance

8th November 1991

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

1
Chemistry: Materials
A sample of matter has particles that are far apart and moving quickly in random directions. State which state of matter this describes.
2
Chemistry: Acids, Reactions and the Periodic Table
Name the salt produced when zinc reacts with sulfuric acid.
3
Chemistry: The Periodic Table and Separating Mixtures
In a chromatography experiment, the solvent front travels 10 cm and a dye spot travels 4 cm. Calculate the Rf value of the dye.
4
Chemistry: Reactions, Energy and Rates
State whether an exothermic reaction transfers energy to, or takes in energy from, the surroundings.
5
Chemistry: Metals, the Reactivity Series and Environmental Chemistry
Name the two substances that must both be present for iron to rust.

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