Factors affecting rate Quiz
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5 questions, one answer each
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1. Which change will NOT increase the rate of a reaction?
- A. Increasing the temperature
- B. Using a powder instead of lumps
- C. Adding a catalyst
- D. Decreasing the concentration
2. Which factor only changes the rate of reactions involving gases?
- A. Surface area
- B. Pressure
- C. Catalyst
- D. Temperature
3. The same mass of marble chips is crushed and reacted with excess acid. What happens compared with whole chips?
- A. The same total volume of gas is made, but faster
- B. More gas is made, faster
- C. The same volume is made at the same speed
- D. Less gas is made, faster
4. Why does a higher concentration of acid increase the rate?
- A. The acid particles move faster
- B. The acid particles have more energy
- C. More acid particles are in the same volume, so collisions happen more often
- D. The activation energy is lower
5. Which statement about a catalyst is correct?
- A. It is used up in the reaction
- B. It speeds up the reaction and is unchanged at the end
- C. It slows the reaction down
- D. It increases the mass of product made