If you hold a piece of iron wire with a pair of tongs inside acandle flame or a Bunsen burner flame, what will you observe?Will it produce a flame?

If you hold a piece of iron wire with a pairof tongs inside a candle lame or a Bunsenburner lame, what will you observe? Will itproduce a lame?

Iron or steel hand tools may produce sparks that can be an ignition source around flammable substances. Where this hazard exists, spark-resistant tools made of non-ferrous materials should be used: A. True B. False

Why do substances burn with or without a flame?Have you ever observed either a coal or a wood fire? If not, the next time you get achance, take close note of what happens when the wood or coal starts to burn. Youhave seen above that a candle or the LPG in the gas stove burns with a flame. However,you will observe the coal or charcoal in an ‘angithi’ sometimes just glows red andgives out heat without a flame. This is because a flame is only produced when gaseoussubstances burn. When wood or charcoal is ignited, the volatile substances presentvapourise and burn with a flame in the beginning.A luminous flame is seen when the atoms of the gaseous substance are heated andstart to glow. The colour produced by each element is a characteristic property ofthat element. Try and heat a copper wire in the flame of a gas stove and observe itscolour. You have seen that incomplete combustion gives soot which is carbon. Onthis basis, what will you attribute the yellow colour of a candle flame to?

When a Bunsen burner is lit and not being used for heating things, a _________ flame should be used. What one word completes this sentence?

When lighting a Bunsen burner, you should always: