Year 10 / Grade 10 • Daily Science Drill
Chemical Reactions and Rates
Apply conservation, collision ideas and rate factors.
8 questions • 200-question rotating bank • 25 different sets before a full cycle repeats
8Questions
200Question bank
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📖 60-second Quick Read
Chemical Reactions and Rates
Reactions rearrange atoms. Effective collisions require suitable energy and orientation; temperature, concentration, surface area and catalysts can affect reaction rate.
What to remember
- Atoms are conserved in ordinary reactions.
- Higher temperature increases average kinetic energy.
- Higher concentration increases collision frequency.
- Greater surface area exposes more reacting particles.
- Catalysts provide a lower-activation-energy pathway.
Key words
activation energy — minimum energy barrier for reaction
catalyst — increases rate without being consumed overall
collision theory — model explaining rates via particle collisions
concentration — amount per volume
reaction rate — change per unit time
How to use this drill: review the short notes when learning, then close them on later attempts and practise from memory. The rotating bank delays a full set repeat for 25 attempts on the same browser.