Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
- 1Mains Electricity, Power and Energy
Calculate the current drawn by a 1150 W kettle on a 230 V supply.
- 2Particle Model of Matter
A 1.5 kg block of iron is heated from 18 degrees C to 98 degrees C. The specific heat capacity of iron is 450 J/(kg degrees C). Calculate the change in thermal energy.
- 3Density and the Particle Model of Matter
Why is the density of a gas much lower than that of the same substance as a liquid?
- 4Particle Motion, Gas Pressure and Temperature
What causes the pressure of a gas on the walls of its container?
- 5Atomic Structure
State the difference between irradiation and contamination.
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