Questions: 1. What was the state of the candle, sugar, and butter before and after heating? 2. How did the state of the candle, sugar, and butter change after placing it in the bowl? 5. How does the candle change its state from a solid to a liquid and from a liquid to a solid? 4. Imagine seeing the molecules of the candle. Could you draw how they look like before heating? Draw it in the box below. What state of matter was it? 5. How about after it was heated? Draw it in t exhe box below. What state of matter was it?
Answer (1)
1. State of materials before and after heating:CandleBefore: Solid (wax)After: Melted to liquid then back to solid when cooledSugarBefore: Solid crystalsAfter: Melted into a brown liquid, possibly caramelizedButterBefore: Soft solidAfter: Became liquid oil2. Change after placing in the bowl: All materials turned from solid to liquid because of heat.3. Candle’s state change:From solid (cold wax) → liquid (melted wax) due to heat.When cooled again, it becomes solid.4. Molecules before heating (candle):Tightly packed, not moving much – solid state5. Molecules after heating (candle):Spread apart, moving freely – liquid state
