Temperature and rate: practical
Quiz by Oak National Academy: GCSE Combined Science OCR Higher
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6 questions
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- Q1What happens to the rate of a chemical reaction when the temperature is increased?the rate decreasesthe rate is zerothe rate remains unchangedthe rate increases30s
- Q2If the temperature of a reaction increases, what happens to the energy of the particles?increasesdecreasesremains the samebecomes zero30s
- Q3Which of the following explains why increasing temperature increases the rate of reaction?it decreases the number of particlesit increases the frequency and energy of collisionsit decreases the surface area of reactantsit reduces the energy of collisions30s
- Q4Why does cooling a reactant decrease the rate of a reaction?particles have less energy and collide less oftenparticles have more energyparticles collide more oftenparticles become more concentrated30s
- Q5Which of the following statements about temperature and volume of gas produced is correct?Lower temperatures lead to a greater volume of gas being produced.Higher temperatures lead to a greater volume of gas being produced.The temperature does not affect the overall volume of gas that is produced.30s
- Q6What effect does increasing the temperature have on the reactant particles?the reactant particles release energyless reactant particles have energy higher than the activation energymore reactant particles have energy higher than the activation energythe reactant particles have less energy30s