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8th Grade Science
Chemical Reactions
10. Factors
Reaction Rates, Influencing factors
What Controls the Speed of Chemical Reactions?
Discover how temperature, concentration, surface area, and catalysts determine how fast or slow chemical reactions occur in the lab and in everyday life.
What You'll Learn
Temperature increases particle speed, causing more frequent successful collisions overall.
Higher concentration packs more particles together, increasing collision frequency significantly.
Greater surface area exposes more solid particles for faster chemical reactions.
Catalysts lower activation energy, speeding reactions without being permanently consumed.
What You'll Practice
1
Students identify which factors increase or decrease chemical reaction rates.
2
Learners apply collision theory and activation energy to explain reaction speeds.
3
Practice questions test catalyst, inhibitor, concentration, and surface area concepts.
Why This Matters
Understanding reaction rates empowers students to explain and control chemical processes in laboratories, industry, biology, and everyday life.
This Unit Includes
Practice exercises
Learning resources
Skills
Reaction Rates
Collision Theory
Activation Energy
Catalysts
Surface Area
