|
|
 |
|
|
| TGV8:
Incomplete combustion |
|
 |
LINKS |
 |
|
|
|
|
In
discussing yellow flames, you could use a real Bunsen flame
and ask students to explain why opening the hole
makes a difference to the flame.
Notes on Incomplete combustion (2)
 |
If you look back at relevant
sections of these videos, pausing and stepping through
frame by frame you will see the flames are blue when
first lit. |
|
The hydrogen flame you saw was
an orange yellow for another reason: the glass jet gets
hot enough for the sodium atoms in the glass to colour
the flame. With a metal jet a hydrogen flame would be
blue. |
Notes on the video of two glass wick candles
Students should notice that the candle in the jar on the right
(in pure oxygen) has a brighter flame and this flame also
lasts for longer. The jar on the right also has more condensation
in it at the end. Note that there is no condensation at the
top of each jar.
|
|
|
|
|
| a
Science Enhancement Programme CD-ROM 2005 |
|
user
guide |
| |
|
|
|
|
