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It doesn't. Get your facts right.
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∙ 14y ago
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How do you prevent the underside of the test tube from turning black?
Turn down the gas on your burner to reduce the yellow part of the flame. the blue flame is best for no black, called soot.
Do you turn burners to a yellow flame when not in use?
No; I turn them off.
What color does Iron chloride turn in flame test?
sparks from yellow to blue
Why should you turn a Bunsen burner to a yellow flame if you need to leave it?
The yellow flame is more visible - making it easier for others to see. It's also a colder flame than the blue conical one.
How do you get a safety flame with Bunsen burner?
Turn the hole until the flame turns yellow
How hot is the yellow flame?
yes, they are. here are the flame colors in order from hottest to coolest. white - hottest blue - hotter yellow - hot orange - cooler than yellow red - cooler than all of above
What is turned to used to change the type of flame a Bunsen burner produces?
You would turn the collar on a Bunsen Burner so that the holes are exposing the flame to more oxygen to produce a blue flame. Close the holes by turning the collar to turn it back to the yellow (dirty) flame.
How do you turn purple into yellow?
Mix it with black
Why does the wick turn black when a candle burns?
Because the flame is scorching the wick.
What happens if you turn off a Bunsen burner with a yellow flame?
it can go boom boom! fire starts
How do you obtain a blue flame from a Bunsen burner?
You would have to close the collar instead of opening it. This will produce a yellow flame. But it is not suitable for heating. Only a blue flame is suitable for heating as it is much hotter than a yellow flame. M.F. - The yellow smoky flame is the lack of Oxygen (O2) mixing with the Hydrocarbon methane (CH4)
How do you check the presence of sodium in different in different compounds?
You can do a flame test. Sodium will make the flame turn an intense yellow. See: http://en.wikipedia.org/wiki/Flame_test
