GCSE Combined Science Mock Paper 1
A free GCSE Combined Science mock paper with biology, chemistry and physics questions in one paper. Instant marking with worked answers.
- Time allowed
- 35 minutes
- Total marks
- 30
- Calculator
- Allowed
Instructions
- You may use a calculator.
- Relative atomic masses: H = 1, O = 16, Na = 23.
- Type only the number for calculations.
- Longer answers are marked by you against a mark scheme after you finish.
Suitable for AQA Trilogy, Edexcel, OCR Gateway. Written by MockNine; not an official exam board paper.
Your result
| Topic | Progress | Marks |
|---|
The estimated grade uses typical grade boundaries. Real boundaries are set after each exam and change every year. Scroll down to see a worked answer under every question.
1
(a)What is the main job of red blood cells?
(b)Name the part of a plant cell where photosynthesis takes place.
(c)The enzyme lipase breaks down lipids (fats). What does it produce?
(d)Put the parts of a reflex arc in order: which comes first?
2
Explain how a vaccine protects a person from a disease.
3
(a)What does the atomic number of an element tell you?
(b)Calculate the relative formula mass (Mr) of sodium hydroxide, NaOH.
(c)Water, H₂O, has an Mr of 18. Calculate the percentage by mass of oxygen in water, to 1 decimal place.
(d)What type of bonding holds the atoms together in a water molecule?
(e)Name the process used to separate crude oil into fractions.
(f)Cracking breaks long hydrocarbons into shorter ones. Which useful type of molecule does it also produce?
4
(a)A hairdryer is connected to 230 V and draws a current of 5 A. Calculate its power.
(b)A 2000 W heater is switched on for 30 s. Calculate the energy transferred.
(c)A 50 kg cyclist moves at 4 m/s. Calculate their momentum.
(d)A box has a force of 10 N pushing it to the right and 4 N pushing it to the left. What is the resultant force?
(e)Stopping distance is made up of thinking distance and what else?
(f)What is the unit of frequency?
5
Describe how you could investigate how the current through a filament lamp changes as the potential difference across it changes.
END OF QUESTIONS