If you can please answer this question:What colour is the flame when a "strike-back"occurs?
2006-09-03 01:08:48 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
He seems to know what he is talking about...
TYPES OF FLAMES
There are two types of flames produced by a Bunsen burner namely a luminous flame and a non-luminous flame.
A LUMINOUS FLAME:
It is formed when the air holes of a Bunsen burner are closed
CHARACTERISTICS OF A LUMINOUS FLAME
i. It is a tall yellow flame
ii. It is not so hot
iii. It gives much smoke and soot
iv. It is quite
v. It is unsteady
vi.It has four noticeable zones
vii.It does not burn back.
top
A NON-LUMINOUS FLAME:
It is formed when the air holes of a Bunsen burner are fully opened.
CHARACTERISTICS OF A NON-LUMINOUS FLAME :
i. It is a short blue flame
ii. It is very hot
iii. It does not give much smoke and soot
iv. It makes noise
v. It is steady
vi. It has three noticeable zones
vii. It burns back
Image under processing
STRICKING ( BURNING ) BACK
Burning back occurs when the rate of burning of the mixture of gas and air is greater than the speed at which the gas is moving up the chimney as a result the flame jump from the top of the chimney down to the gas jet when the air holes are fully opened. The burning back is corrected by turning off the gas, closing the air holes and lighting the Bunsen burner
2006-09-04 03:00:58 · answer #1 · answered by Anonymous · 5⤊ 0⤋
Non Luminous
2016-10-20 07:09:03 · answer #2 · answered by ? 4 · 0⤊ 0⤋
A luminous flame is yellow no air or oxygen soot comes from the flame Non-Luminous is with oxygen a blue flame
The flame at strike-back is green
http://en.wikipedia.org/wiki/bunsen_burner
Strike-back
http://www.science.edu.sg/ssc/detailed.jsp?artid=6481&type=6&root=5&parent=5&cat=53
2006-09-03 01:31:59 · answer #3 · answered by Eric C 4 · 2⤊ 0⤋
a luminous flame is yellow n a non luminous flame is blue.
2016-03-12 21:09:13 · answer #4 · answered by James Ojowi 1 · 1⤊ 0⤋
Blue
2016-03-17 01:24:32 · answer #5 · answered by Anonymous · 1⤊ 0⤋
Informative discussion, just what I was looking for.
2016-08-14 04:30:17 · answer #6 · answered by Anonymous · 1⤊ 0⤋