GCSE Science | Concentration

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  • concentration = moles/ volume
    • concentraion: mol/dm3
    • moles: mol
    • volume: cm3
    • 1cm3 = 0.001dm3 (divide by 1000)

Question 1

Question 2

Question 3

Volume of gases at room temperature and pressure

  • at room temperature and pressure, 1 mole of gas occupies 24 dm3
  • the concentration of gas at r.t.p is 1/24 mol/dm3

Question 4

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GCSE Science | Lenses

What is the focal point? * the point at which rays or waves meet after reflection or refraction, or the point from which diverging rays or waves appear to proceed. What is focal length?
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GCSE Science | National Grid

National grid * electrical power is transferred at high voltages from power stations, and then transferred at lower voltages in each locality for domestic use Step-up transformers * increases the voltage * this allows the cables
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GCSE Science | Waves

What is a wave? * Waves are a transfer of energy. What is a transverse wave? * Transverse waves: the vibrations are perpendicular to the direction of the wave (water, EM waves) What is a