Rates of Reaction

Question 1

Name the factors that affect the rate of a chemical reaction

Answer 1

• Concentration
• Temperature
• Pressure of gases
• Surface area of solids
• Catalyst

Question 2

Explain how increasing temperature affects the rate of a chemical reaction

Answer 2

• Increases rate of reaction
• Particles have more energy and move faster
• Colliding more frequently
• More particles have activation energy

Question 3

Explain how increasing concentration affects the rate of a chemical reaction

Answer 3

Rate of reaction increases

Particles are more crowded

there are more frequent collisions

Question 4

Explain how increasing pressure affects the rate of a chemical reaction

Answer 4

Rate of reaction increases

particles are more crowded

and collide more frequently

Question 5

Explain how griding solids into a powder affects the rate of a chemical reaction

Answer 5

Increases rate of reaction

as surface area increases

increasing the frequency of collisions

Question 6

Explain how a catalyst increases the rate of a chemical reaction

Answer 6

Lowers activation energy

by finding an alternate pathway