To change liquid wax back to a solid state, allow it to cool and solidify. As the temperature drops below the wax’s freezing point, it will transition from liquid to solid. This can be sped up by placing it in ...
Category: Class 6 Science
NCERT Solutions and Important Questions for class 6 Science for CBSE exams 2020-2021.
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To turn candle wax into a liquid state, heat it gently. The heat raises the wax’s temperature, causing it to melt. Use a heat source like a candle warmer or a pot of hot water.
An example of a substance changing from solid to liquid is ice cream. When ice cream is taken out of the freezer and warms up, it melts from a solid to a liquid state.
On a hot day, evaporation occurs faster due to higher temperatures providing more energy for water molecules to escape into the air. On a cold day, evaporation is slower because there is less thermal energy available.
Water evaporation speed is influenced by temperature, humidity, air movement, and surface area. Higher temperatures and lower humidity increase evaporation, while more air movement speeds it up. Larger surface areas also facilitate faster evaporation.