Lesson 8. 1 Measuring the rate of reaction

• Chemistry
• Secondary Education
• Age 12,13

Learning Resources Needed

• Learning device for LessonUp.app
• Notebook and writing tool
• Learner's book, page 271 to 274
• NO smartphones are allowed.

Lesson 8.1

Measuring the rate of reaction

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Expectations 

• use word equations and symbol equations to describe reactions
• interpret the rate of reaction using tables and graphs

What are the lab materials you see in this diagram?

KQ: Can you measure the rate of reaction? Describe.

What is the word equation for the reaction below?

Study the two ways of presenting data.

Poll : Which of the two is better to use in determining the rate of reaction? 

Table

Graph

How can you tell that a reaction has started between magnesium and sulfuric acid?

1. A lot of bubbles are given off.
2. No bubbles are given off.
3. You will observe an explosion.
4. Only a few bubbles are given off.

How can you tell that a reaction has stopped between magnesium and sulfuric acid?

1. A lot of bubbles are given off.
2. No bubbles are given off.
3. You will observe an explosion.
4. Only a few bubbles are given off.

_______ is a measure of how quick the reaction is.

1. Rate of reaction
2. Power of reaction
3. Speed of molecules
4. Particle theory

Which of the following is NOT a way of measuring the rate of reaction in a give chemical change? It is knowing _____.

1. how much one of the products has been made
2. how much all of the products have been made
3. how much of a reactant has been used up
4. how much of a product has been used up

In the magnesium ribbon experiment, it is difficult to measure how much reactant has been used up and how much magnesium sulfate is produced. Which of the following is the best of knowing the rate of reaction?

1. measure the volume of the final solution
2. measure the volume of the hydrogen gas produced
3. measure the mass of the magnesium ribbon
4. measure the mass of the whole solution

Study the graph below.

Study the graph below.

Do you see any anomalous result?

PRACTICE

Collaborative Task

Self : To what extent can you do the following:  

a. use word equations and symbol equations to describe reactions

b. interpret the rate of reaction using tables and graphs

I can do it and I can teach others.

I can do it but need more practice.

I cannot do it so I need to study harder.