Find here Combustion and the Colour of Smoke, visit: http://mocomi.com/combustion-and-the-colour-of-smoke/

1. Chemistry for Kids
mocomi.com/learn/science/chemistry/
Combustion &
the colour of
smoke
F UN FOR ME!
Copyright © 2012 Mocomi & Anibrain Digital Technologies Pvt. Ltd. All Rights Reserved.

2. Combustion& the
colour of smoke
The colour of smoke depends on how well
something burns. Things that burn well
give off white smoke. This contains
vapour and carbon dioxide. Things that do
not burn well, such as rubber, give off
black smoke. This smoke as soot in it.
Smoke that is grey has ash in it.
Factory chimneys make a lot of smoke
F UN FOR ME!
Copyright © 2012 Mocomi & Anibrain Digital Technologies Pvt. Ltd. All Rights Reserved.

3. Combustion& the
colour of smoke
BLUE SMOKE
Sometimes smoke looks blue instead of
white. If you remember, sunlight is made
up of seven colours. When sunlight hits
the moisture in smoke, the blue light scatters. This usually happens when the sky is
dark like at dust.
F UN FOR ME!
Copyright © 2012 Mocomi & Anibrain Digital Technologies Pvt. Ltd. All Rights Reserved.

4. Combustion& the
colour of smoke
A LACK OF OXYGEN MAKES SMOKE
BLACK
A fire needs oxygen to burn. Oxgen is usually present in the air. When fire gets
enough oxygen, nearly everything burns
up. But if there isn't enough oxygen,
things dont burn as well. The unburnt bits
become soot and make the smoke black.
F UN FOR ME!
Copyright © 2012 Mocomi & Anibrain Digital Technologies Pvt. Ltd. All Rights Reserved.

5. For more such fun chemistry articles and videos, visit:
mocomi.com/learn/science/chemistry/
Combustion& the
colour of smoke
ADDITIONAL INFORMATION
There are three requirements for making
a fire: a substance that burns, enough
heat to raise the substance to its kindling
temperature and plenty of oxygen. Things
that burn in the air usually contain carbon
and hydrogen. During combustion, oxygen
combines with these elements to form
water vapour and carbon dioxide. Soot is
unburnt carbon and is the result of a lack
of exygen getting to
the fire. Ash is the
non-combustible product of burnt substances and does not
combine with oxygen.
All of these factors
affect the colour of
smoke.
F UN FOR ME!
Copyright © 2012 Mocomi & Anibrain Digital Technologies Pvt. Ltd. All Rights Reserved.