EVERYDAY SCIENCE

Detailed explanation-1: -With an increase in temperature, the particles gain kinetic energy and move faster. The actual average speed of the particles depends on their mass as well as the temperature – heavier particles move more slowly than lighter ones at the same temperature.

Detailed explanation-2: -Each phase change has a specific name, based on what is happening to the particles of matter. The less ordered gas molecules loose energy, slow down, and become more ordered. The more ordered liquid molecules gain energy, speed up, and become less ordered.

Detailed explanation-3: -Particles or molecules in matter speed up when heat is added and slow down when heat is removed. Thermal energy can cause matter to expand and removal of thermal energy can cause matter to contract.

Detailed explanation-4: -The amount of energy a particle has depends on how fast it is moving. Faster-moving particles have more energy. Slower-moving particles have less energy. The particles in hot substances have more kinetic energy than the particles in cold substances.

Detailed explanation-5: -In gases, the particles move quickly as they have high energy. The molecules of gases have the highest energy in comparison to the molecules of solids and liquids.