Lesson: Factors Affecting Rate Chemistry • 7th Grade

In this lesson, we will learn how to predict and explain the effects of changing concentration, pressure, and surface area on the rate of reaction using the collision theory.

Lesson Plan

Students will be able to

explain, using the collision theory, the effects of changing conditions of concentration, pressure, and surface area on the rate of a reaction,
identify methods to increase or decrease concentration, pressure, and surface area,
compare the results of surface area and volume calculations,
list situations where altering concentration, pressure, and/or surface area may be dangerous.

Lesson Presentation

Lesson Video

Lesson Explainer

Lesson Flashcards

Lesson Worksheet

Q1:

A student is performing a catalytic cracking of liquid paraffin, using porcelain chips as the catalyst. To accelerate the reaction, the surface area of the porcelain chips must be increased. Which of the following tools would be most suitable for this task?

Q2:

Consider a cube with sides that are exactly 10 cm long, as shown:

What is the volume of the cube?

What is the surface area of the cube?

If the cube were cut in two, would the total volume and the total surface area increase, decrease, or stay the same?

Q3:

The following combinations of shapes all have the same total volume. Which has the greatest total surface area?