3tto - Combustion

• Scheikunde
• Middelbare school
• vwo
• Leerjaar 3

Activating prior knowledge

In the next slide give a description in your own words.
Write down as much as you know about
combustion reactions.

combustion

Combustion

Also called burning.
Reaction with oxygen.
Main product is an oxide (often invisible gas)
Type of oxidation reaction.
Heat is given out in combination with light.

A combustion reaction always takes place with

In a combustion each element forms an oxide. Carbon forms
What does hydrogen form?

CO​2​​

Methane

1. CO​2​​
2. CH​3​​
3. CH​4​​
4. Me

Give the word equation
of the combustion reaction of methane (natural gas).
Put the reaction equation (using formulae) in your notebook

Combustion of methane

Give the reaction equation
of the combustion reaction of methane (natural gas).

Tekst

CH​4​​(g)+2O​2​​(g)→CO​2​​(g)+2H​2​​O(l)

Combustion reaction

A chemical reaction in which the oxides are formed from the elements in the reactant together with oxygen.

ABC+O​2​​→AO+B​2​​O+CO​2​​

Kinds of Combustion

Complete = enough oxygen present
oxides with maximum oxygen atoms are formed

Incomplete = not enough oxygen
oxides with less oxygen atoms are formed

carbonmonoxide:2CH​4​​(g)+3O​2​​(g)→2CO(g)+4H​2​​O

CH​4​​(g)+2O​2(g)​​→CO​2​​(g)+2H​2​​O(l)

soot:CH​4​​(g)+O​2​​(g)→C(s)+2H​2​​O(l)

Summary

• Combustion Reaction
• Products formed
• Chemical Equations
• Kinds of combustion reactions