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.
Discussion Forum Latest Questions
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.
Clothes dry faster on a windy day because the wind increases air circulation, which speeds up evaporation. The moving air helps remove moisture from the surface of the clothes more efficiently than still air.
To speed up drying clothes on a rainy day, use a fan or dehumidifier to increase air circulation and reduce humidity. Alternatively, use a heater to warm the air, which enhances evaporation.
When you rub sanitizer on your hands, it feels cool because the evaporation of alcohol absorbs heat from your skin. This cooling effect occurs as the sanitizer evaporates and dries off.
The water in an earthen pot is cold because the porous material allows evaporation of water from the surface. This process absorbs heat, lowering the temperature of the remaining water inside the pot.
Clouds give us rain when water vapor in them cools and condenses into tiny droplets. These droplets combine to form larger droplets, which eventually fall to Earth as precipitation due to gravity.
If evaporation ceased, water wouldn’t turn into vapor to form clouds or precipitation. This would disrupt the water cycle, leading to droughts, reduced freshwater availability, and severe impacts on ecosystems and agriculture.