Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
3rd August 2023
- 1Mains Electricity, Power and Energy
Why does the national grid transmit electricity at a very high potential difference?
- 2Particle Model of Matter
State the correct SI unit for density.
- 3Density and the Particle Model of Matter
Convert a density of 2.7 grams per cubic centimetre into kilograms per cubic metre.
- 4Particle Motion, Gas Pressure and Temperature
A gas at 200 kPa occupies 3.0 cubic metres. It is compressed to 1.5 cubic metres at constant temperature. Calculate the new pressure.
- 5Atomic Structure
A source has a half-life of 5 days and an initial activity of 1600 Bq. What is its activity after 15 days?
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