4-mark practice questions — Pearson Edexcel International GCSE Chemistry (4CH1)
158 questions · chemistry · View as Markdown
How to answer
4-mark questions are the shortest levels-of-response band. Aim for four scientific ideas, each in its own short sentence.
Sample questions
- Aluminium chloride has the formula AlCl₃. State what is meant by the term relative formula mass and describe the steps y…
- A student prepares a sample of copper(II) sulfate solution by adding dilute sulfuric acid to an excess of copper(II) car…
- A student performs flame tests and chemical tests on three separate solutions, labelled X, Y and Z. Solution X gives a b…
- Magnesium has atomic number 12. An atom of magnesium has two electrons in its outermost shell. Describe the arrangement …
- When ammonium chloride dissolves in water, the temperature of the water decreases. Explain what this temperature change …
- Methanol and butanol are both members of the alcohols homologous series. Describe TWO chemical properties that methanol …
- Explain why two atoms of the same element can have different mass numbers.
- Chlorine, bromine and iodine are all halogens in Group 7 of the periodic table. Describe and explain the trend in reacti…