Year 9 / Grade 9 • Daily Science Drill

Chemical Reactions and Rates

Represent reactions and factors affecting reaction rate.

8 questions • 200-question rotating bank • 25 different sets before a full cycle repeats

8Questions
200Question bank
0Best score
📖 60-second Quick Read

Chemical Reactions and Rates

Chemical reactions rearrange atoms. Temperature, concentration and surface area can affect rates by changing collision frequency or effectiveness.

What to remember

  • Atoms are conserved in ordinary reactions.
  • Higher temperature often increases reaction rate.
  • Higher concentration can increase collision frequency.
  • Greater surface area can increase rate.
  • Catalysts can increase reaction rate.

Key words

reactant — starting substance
product — formed substance
reaction rate — speed of reaction
catalyst — substance increasing rate without being consumed overall
concentration — amount per volume
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.

What this Year 9 / Grade 9 science drill practises

Represent reactions and factors affecting reaction rate. This daily drill is designed as short retrieval practice rather than a complete course. It can be used for school revision, homework, warm-ups or independent practice.

  • Atoms are conserved in ordinary reactions.
  • Higher temperature often increases reaction rate.
  • Higher concentration can increase collision frequency.
  • Greater surface area can increase rate.
  • Catalysts can increase reaction rate.

International use: the topic is organised by broadly useful school-level progression. Exact curriculum timing and terminology can vary between countries, states and schools.

More Year 9 Science daily drills

Science VocabularyBiological Systems and HomeostasisEcosystems and InterdependenceGenetics and Evolution IntroductionPlate Tectonics and Earth ProcessesAtomic StructureEnergy, Waves and ElectricityScientific Inquiry, Error and UncertaintyEvidence, Claims and Science in Society