Factors Affecting Reaction Rates

Factors Affecting Reaction Rates

Assessment

Interactive Video

Chemistry, Science

7th - 10th Grade

Hard

Created by

Amelia Wright

FREE Resource

The video tutorial explores factors affecting the speed of chemical reactions, including surface area, temperature, concentration, and catalysts. It explains how increasing surface area and temperature can accelerate reactions, while lowering them can slow reactions. The role of concentration in increasing collision frequency and the function of catalysts in providing alternative pathways with lower activation energy are also discussed.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why do we store food in the refrigerator?

To increase the temperature

To change the taste of the food

To slow down chemical reactions

To speed up chemical reactions

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when you cut food into smaller pieces before cooking?

It cooks more slowly

It cooks at the same rate

It cooks more quickly

It doesn't cook at all

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does increasing the surface area of a reactant affect the reaction rate?

It stops the reaction

It decreases the reaction rate

It has no effect on the reaction rate

It increases the reaction rate

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why does a steel wool rust faster than a nail?

Because it is heavier

Because it has a larger surface area

Because it is made of a different material

Because it is exposed to less oxygen

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the effect of increasing temperature on the reaction rate?

It stops the reaction

It decreases the reaction rate

It has no effect on the reaction rate

It increases the reaction rate

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why do we use a pressure cooker to cook food faster?

It changes the taste of the food

It decreases the pressure

It increases the temperature

It decreases the temperature

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the reaction rate when the concentration of reactants is increased?

It decreases

It stops

It remains the same

It increases

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