1. What happens to the particles during melting and evaporation of wax? 2. How does the energy source differ for melting wax and evaporating water? 3. Can you think of examples of melting and evaporation in everyday life?
Answer (1)
1. During melting, the particles in wax gain energy, start to vibrate faster, and move further apart, changing from a solid to a liquid state.- During evaporation, the liquid wax particles gain enough energy to overcome attraction forces and escape into the air as gas. 2.The energy for melting wax usually comes from heat applied directly to the solid wax, causing particles to move more.- For evaporating water, energy comes from heat (like sunlight or a stove) that lets some water particles gain enough energy to change into vapor. 3. Melting: Ice cream melting on a hot day, butter melting in a pan.- Evaporation: Clothes drying under the sun, water evaporating from a puddle after rain.
