TRUE OF FALSE
1. The temperature increases during melting.
2.Energy is required for each phase change.
3. When the water warms, the temperature decreases.
4.The temperature remains the same when an object freezes.
5.Water may change directly from solid to gas.
1. The temperature increases during melting.
2.Energy is required for each phase change.
3. When the water warms, the temperature decreases.
4.The temperature remains the same when an object freezes.
5.Water may change directly from solid to gas.
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Explainnation:
1.In pure substances, temperature is constant during melting. In mixtures, temperature increases during melting
2.any transition from a more ordered to a less ordered state (solid to liquid, liquid to gas, or solid to gas) requires an input of energy
3.As the temperature falls, the particles slow down. If a liquid is cooled sufficiently, it forms a solid.
4.During freezing, the temperature of a substance remains constant while the particles in the liquid form a crystalline solid.
5.This change, directly from a solid to a gas without becoming a liquid, is called sublimation