Changes+on+heating

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Aim: To observe the effects of heating different materials

Diagram: tin lid, substance, gauze, tripod, Bunsen burner

Method: Set up all the equipment Collect the first substance and put it on the tin Heat the substance on a roaring __flame__ (the hottest) Observe the change of the substance such as colour, shape, state, etc. Hold the substance using __tongs__ and heat it __directly__ if it doesn't react after heating for 30 seconds (Copper, Magnesium) Record the appearance and the effect of heating with the name of each substance

Results Conclusion: There are 4 possible observations when heating. The substance can __change in colour,__ it can __burn__, it can __change in state__, or there can be __no reaction__ at all.
 * Name (Formula) || Apearance || Effect of heating ||
 * Copper Sulfate(CuSO 4 ) || Blue powder || Turns white, smells like marshmallows, popping ||
 * Wax flakes || White flakes || Melts, burns into black ash and catches fire ||
 * Cobalt Chloride(CoCl 2 ) || Red black sticky powder || Turns purple then into a bubbling liquid, turns blue ||
 * Magnesium || Silver strip of metal || Glows really brightly with white flame ||
 * Copper || Bronze strip of metal || Glows orange and green and turns blackish gray ||
 * Salt(NaCl) || Small white grains || No changes ||
 * Zinc oxide || White powder || Turns green, yellowish white when heating directly ||
 * Sucrose(Sugar) || White grains || Melts, bubbles, turns brown, catches flame, turns black carbon ||
 * Ice || Watery cube || turns into water then evaporates ||
 * Sand || Small brown grains || No change even if with direct heat ||