3.x Collision Theory (GCSE Chemistry)

The following is a GCSE Chemistry test covering '3.x Collision Theory'

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What happens to collision frequency when concentration of reactants decreases, according to collision theory?

Decreasing particle size of a solid reactant increases its:

Collision theory explains which requirement regarding reactant orientation?

Collision theory explains that increasing the surface area of a reactant enhances reaction rate by:

Why might a reaction rate decrease when pressure of gaseous reactants is lowered?

Reaction rates increase if reactants are in powder form rather than lumps because powders have:

Why do reactions typically slow over time, according to collision theory?

What is defined by collision theory?

With regards to collision theory, stirring a solution:

Why does increasing temperature generally speed up a chemical reaction?

What change to particle collisions occurs when reactant particles are heated?

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