Page 262 - Science Course 3 (Book 1)

4. Explain in general what happens when any chemical reaction occurs.

5. State what is true about energy in all chemical reactions.

Mo7-L3: Key Concept Check

Direction: Circle increases or decreases to show how the factor affects the reaction rate. Then explain
why the reaction rate changes in the space provided.

How a Factor Affects a Reaction Why the Reaction Rate Changes

1. Particles collide more often.
increases decreases

2. Particles move faster when they collide.
increases decreases

3. Concentration of one reactant decreases.
increases decreases

4. adding a catalyst
increases decreases

5. reducing the surface area for the reaction
increases decreases

6. raising the temperature
increases decreases

7. adding an inhibitor
increases decreases

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