YR1_T2_LSN7

• Science
• Middelbare school
• havo, vwo
• Leerjaar 1

HAVE READY

• YOUR TEXTBOOK
• YOUR NOTEBOOK
• A PEN/MARKER
• YOUR MACBOOK (JOIN THIS LESSONUP) 

TOPIC 2: Being in the world 

In this topic you will learn about food chains, molecules in food, the digestive system, combustion inside and outside the body.

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TOPIC 2.5: COMBUSTION OUTSIDE THE BODY

• I know the fire triangle
• I understand how a fire can be extinguished by removing one of the conditions in the fire triangle
• I know the combustion equation for complete combustion
• I know how incomplete combustion happens and I know what changes in the equation when it is incomplete combustion 
• I know the dangers of carbon monoxide (CO)

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TOPIC 2.5: COMBUSTION OUTSIDE THE BODY

• Complete combustion
• Incomplete combustion 

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COMBUSTION

• We learned that: 

Combustion is burning

Respiration is combustion in the body

It is also possible to combust things outside the body!

Can you list 3 examples of combustion?

• combustion inside the body is respiration!

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Conditions for combustion

Fire triangle - the 3 things needed for combustion:

• Fuel
• Sufficient oxygen to react with the fuel
• Sufficient heat for the reaction to begin

To put out a fire one of these things must be removed!

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Putting out a fire

How are these fires put out?

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Combustion equation

We know that fuel and oxygen are needed for fire, but what is created when something burns? Think about respiration!

  

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Hw for the next lesson

• Complete all the exercises of § 2.5.
• Study the words of lessons §2.1-§2.5 on WRTS.
• Complete and review your notes.
• Update your summary on Google Classroom.

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