Question

Consider this graph showing temperature over time. What would happen in this situation? The temperature decreases from 25°C to 15°C, the material _______ heat and its kinetic energy _________ as the material freezes to become a solid

Answer 1

liquid that is a few degrees above the melting point, and then the material is ... The temperature rises as the solid is heated, but stays the .... Position the stand close.

Answer 2

The temperature decreases from 25°C to 15°C, the material releases heat and its kinetic energy decrease as the material freezes to become a solid.

Explanation:

• Here this material is freezing(solid), that means it releasing energy. So this is an exothermic reaction.
• In exothermic reaction delta G is negative, and the kinetic energy is decreased.
• The material is releasing heat because its going to liquid to solid stage.

So the temperature decreases from 25°C to 15°C, the material releases heat and its kinetic energy decrease as the material freezes to become a solid.