Temperature is one of the major factors that affects the rate of change of the liquid colour, this is because ; like when if you freeze hot water the ice formed will be clear transparent, while on the other hand, if we freeze cold water it would be foggy inside the ice. This change occurs because of the temperature difference of the cold and hot water.
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I believe that answer is D The heat from the Bunsen burner transfers to the water and the pot, then the heat from the pot transfers to the person’s hand.
