Is math related to science?

• Scheikunde
• HBO
• Studiejaar 3

Micro teaching Anne-Laure

This lesson was designed for a havo 3

Chemistry and math in a burning symbiosis

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What do you notice in this video?

Lesson goals

After this lesson the students can identify what a combustion reaction is and are able to balance these equations.

After this lesson the students know what mole ratio is and how to solve simple questions using the mole ratio.

Combustion reactions

What is a combustion reaction and how can you identify them?

• A combustion reaction is...
• How can you notice the difference?
• What is formed? 

C	CO 2
H	H 2 O
S	SO 2

How to balance the equation?

The 3-step method

Write down the formula of the combustible and add +O₂

Check which atoms are present in the combustible and write down after the arrow CO₂/H₂O/SO₂

Balance the equation

Example of balancing an equation

We start with sugar (C₆H₁₂O₆)

Than we add +O₂ and CO₂/H₂O/SO₂

Now it looks like:

Example of balancing an equation

Now we look at the amount of C atoms to the left and bring this amount to the right.

After that we look at the amount of H atoms to the left and bring this amount to the right

After this we look at the amount of O atoms to the right and bring this to the left.

Now it looks like:

Make the three questions on worksheet 1. Send a photo of your answer at number 3.

Make the 3 questions on worksheet 2. Send a photo of your answer at number 3.

Write down what you learned today

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