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Collision Theory Basics

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Questions and Answers

According to the collision theory, what must particles possess for collisions to be effective?

Minimum amount of energy (correct)
No energy requirement
Variable amount of energy
Maximum amount of energy

What is activation energy in a chemical reaction?

The energy of the colliding molecules
The energy absorbed during a reaction
The energy released during a reaction
The minimum energy required for a reaction to occur (correct)

What is one of the factors affecting reaction rates according to the text?

Temperature of the surroundings
Color of the solution
Concentration of reactants (correct)
Volume of the solution

Why is proper orientation important for effective collisions between molecules?

To facilitate successful reactions (A) Signup and view all the answers

What role does the collision theory attribute to molecules in a chemical reaction?

Molecules must collide to react (C) Signup and view all the answers

What is concentration with regard to chemical reactions?

Amount of solute per unit volume (B) Signup and view all the answers

What is the relationship between the concentration of reactants and the rate of a chemical reaction?

The rate of reaction is directly proportional to the concentration of reactants (C) Signup and view all the answers

What is the effect of increasing temperature on the rate of a chemical reaction, according to collision theory?

Increasing temperature increases the kinetic energy of the molecules, increasing the rate of reaction (C) Signup and view all the answers

What is the relationship between surface area and particle size for solids?

As particle size decreases, surface area increases (A) Signup and view all the answers

What is the primary function of a catalyst in a chemical reaction?

To provide an alternative reaction pathway with lower activation energy (D) Signup and view all the answers

In a homogeneous catalytic reaction, what is the phase of the catalyst relative to the reactants?

The catalyst is in the same phase as the reactants (A) Signup and view all the answers

What is the typical phase of a heterogeneous catalyst?

Solid (A) Signup and view all the answers

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