Edexcel Combined Science Chemistry Paper 1 – Mock Paper
Time: 1 hour 10 minutes
Total marks: 60
Section A – Multiple Choice
1. What is the charge of a proton?
A) -1 B) 0 C) +1 D) +2
2. Which state of matter has particles that are close together but can move past each other?
A) Solid B) Liquid C) Gas D) Plasma
3. What type of bonding is in sodium chloride?
A) Covalent B) Ionic C) Metallic D) Hydrogen
4. Which method separates an insoluble solid from a liquid?
A) Distillation B) Filtration C) Chromatography D) Crystallisation
5. Which metal is most reactive?
A) Copper B) Iron C) Magnesium D) Gold
Section B – Short Answer
6. Describe the structure of an atom. Include nucleus and subatomic particles. (4)
7. Explain why isotopes of the same element have different masses. (3)
8. Magnesium reacts with oxygen:
a) Write the word equation
b) Write the balanced symbol equation (4)
9. Explain why ionic compounds have high melting points. (3)
10. Describe how you would obtain pure water from salt water. (4)
Section C – Calculations
11. Calculate the relative formula mass (Mr) of calcium carbonate (CaCO3). (4)
12. A student reacts 2g of magnesium with excess oxygen:
a) What type of reaction is this?
b) Explain what happens to the mass after reaction (5)
Section D – Practical & Analysis
13. Investigate rate of reaction between hydrochloric acid and magnesium:
a) How to measure rate
b) Two variables to control
c) How to make test fair (6)
Section E – Extended Response
14. Explain how metals are extracted depending on reactivity. Include carbon reduction,
electrolysis, examples. (6)