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Course: CHECKPOINT - Lower Secondary Science 0893
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Curriculum

CHECKPOINT - Lower Secondary Science 0893

Biology 01. Structure And Function

0/25

Biology 02. Life Processes

0/27

Biology 03. Ecosystems

0/7

Chemistry 01. Materials And Their Structure

0/24

Chemistry 02. Properties Of Materials

0/19

Chemistry 03. Changes To Materials

0/20

Physics 01. Forces And Energy

0/24

Physics 02. Light And Sound

0/12

Physics 03. Electricity And Magnetism

0/12

Earth and Space 01. The Earth

0/7

Earth and Space 02. Cycles On Earth

0/5

Earth and Space 03. Space

0/13
Quiz

6.9 Describe the effects of concentration, surface area and temperature… – Check yourself

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Rates of reaction Checkpoint Science check yourself quiz: free practice for Cambridge Checkpoint – Lower Secondary Science 0893. Work through this Rates of reaction Checkpoint Science check yourself quiz and get instant feedback on every answer. If you get stuck, review the 6.9 Describe the effects of concentration, surface area and temperature… – Notes lesson. More practice: Cambridge Checkpoint – Lower Secondary Science 0893 — all units. Syllabus: Cambridge Lower Secondary programme.

  • Questions count: 7
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
Which step comes first in the sequence covered in this lesson?
Which step comes first in the sequence covered in this lesson?
E ≥ Ea?
Correct orientation?
Particles collide
Successful reaction
2.
Which statement best describes Boltzmann distribution?
Which statement best describes Boltzmann distribution?
Minimum energy for a successful collision.
Particles must collide with E ≥ Ea and correct orientation.
Change in concentration per unit time.
Spread of molecular energies in a gas.
3.
According to the comparison table in this lesson, what is the Example of Temperature?
According to the comparison table in this lesson, what is the Example of Temperature?
Factors affecting rate
Haber process
Fe in Haber
Food cooks faster
More acid → faster fizz
4.
Which statement best describes Homogeneous catalyst?
Which statement best describes Homogeneous catalyst?
Different phase; reaction on surface.
Minimum energy for a successful collision.
Same phase as reactants.
Particles must collide with E ≥ Ea and correct orientation.
5.
Which key term matches this description: "Biological catalyst."
Which key term matches this description: "Biological catalyst."
Homogeneous catalyst
Enzyme
Catalyst
Heterogeneous catalyst
6.
According to the comparison table in this lesson, what is the Explanation of Temperature?
According to the comparison table in this lesson, what is the Explanation of Temperature?
Factors affecting rate
More particles per volume
More frequent collisions
Energy breaks bonds
More particles have E ≥ Ea, more collisions
7.
Complete the statement: Catalysts lower the ______.
Complete the statement: Catalysts lower the ______.
Homogeneous catalyst
Catalyst
activation energy
Collision theory
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Part of Chemistry 03. Changes To Materials — see every lesson and quiz in this unit.
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