DENSITY AND PRESSURE
3 marks · Easy(a)[1 mark]
What is the SI unit for temperature used in scientific equations?
(b)[2 marks]
Convert a temperature of 27 °C to Kelvin.
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(a) Kelvin
(b) 300 K
Common mistakes: Not adding 273 to Celsius; Confusing °C and K
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Marking points
A1 (a) · 1 mark · States correct SI unit: Kelvin (K)
M1 (b) · 1 mark · Uses Kelvin = °C + 273
A2 (b) · 1 mark · Correct final value, 300 K
Worked solution
a) The SI unit for temperature is Kelvin (K).
b) To convert 27 °C to K: K = 27 + 273 = 300 K.