Reaction Rates and Equilibrium Concepts

Reaction Rates and Equilibrium Concepts

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial explains the process of a chemical reaction, focusing on how reactants decrease and products increase over time. It highlights the concept of reaction rates, showing how they are represented by the gradient of a graph. The tutorial discusses irreversible reactions, where reactants convert to products without reversing. Initially, the reaction rate is high due to abundant reactants, but it decreases as products form, leading to fewer reactant collisions. Eventually, the reaction rate becomes zero when reactants are fully converted.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the concentration of reactants as a reaction progresses?

It remains constant.

It increases.

It decreases.

It fluctuates randomly.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does a steep gradient on a reaction graph indicate?

A constant reaction rate.

No change in reaction rate.

A high reaction rate.

A low reaction rate.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the relationship between reactant concentration and reaction rate at the start of a reaction?

Higher reactant concentration leads to a lower reaction rate.

Reactant concentration and reaction rate are inversely proportional.

Higher reactant concentration leads to a higher reaction rate.

Reactant concentration does not affect reaction rate.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In an irreversible reaction, what is the direction of the reaction?

It does not proceed at all.

It proceeds to the left.

It proceeds to the right.

It can proceed in both directions.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the focus of the section on equilibrium?

Dynamic reactions.

Irreversible reactions.

Static reactions.

Reversible reactions.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the reaction rate as more products are formed?

It remains the same.

It increases.

It becomes unpredictable.

It decreases.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why does the reaction rate decrease over time?

Because products are increasing.

Because reactants are increasing.

Because products are decreasing.

Because reactants are decreasing.

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