Factors Affecting the Rate of Reaction

Factors Affecting the Rate of Reaction

Assessment

Interactive Video

Chemistry, Science, Physics

University

Easy

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Used 6+ times

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The video tutorial explains the factors affecting the rate of chemical reactions, including the number of collisions, energy of particles, pressure, concentration, surface area, temperature, and the use of catalysts. It highlights how each factor influences the frequency and energy of collisions, thereby affecting the reaction rate. The tutorial also provides examples and graphs to illustrate these concepts.

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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the two main factors that determine the rate of a chemical reaction?

The color and smell of reactants

The type of catalyst used

The number of collisions and energy of collisions

The size and shape of the container

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does increasing the concentration of reactants affect the reaction rate?

It changes the color of the reactants

It decreases the reaction rate

It has no effect on the reaction rate

It increases the reaction rate

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the reaction rate when the surface area of a solid reactant is increased?

The reaction rate decreases

The reaction rate remains unchanged

The reaction rate increases

The reaction rate becomes unpredictable

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why do smaller particles of a solid react faster than larger ones?

They have a higher mass

They are more colorful

They have a larger surface area to volume ratio

They are denser

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does increasing temperature affect the rate of reaction?

It increases the rate of reaction

It changes the state of reactants

It has no effect on the rate of reaction

It decreases the rate of reaction

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What role does a catalyst play in a chemical reaction?

It decreases the energy of collisions

It changes the reactants into different products

It provides an alternative pathway with lower activation energy

It increases the number of collisions

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT affected by the presence of a catalyst?

The activation energy

The number of collisions

The reaction rate

The energy of collisions