Question

I. Identify the effect of heat: 1) Chocolate melts when placed in your pocket for some time. --------------------
2) Ice change into water on holding in your hand.----------------------
3) It is difficult to close the door after a few days of continuous rain -----------------------
4) Water changes into steam ………………………………
5) A liquid at 50 0 C changes into 70o C on heating…………………………

Answer 1

Answer:

5) A liquid at 50 0C changes into 70oC on heating

Answer 2

The effect of heat are

chocolate melts when placed in our pocket

ice changes in to water on holding in our hand

water changes into steam

a liquid at 50 degree Celsius changes into 70 degree Celsius

option 1,3, 4, 5

Explanation:

• heat is one of the source of the energy. When a body absorbs heat the kinetic energy of the molecules of the substance increases. As a result of this there is increase in the temperature of the body.
• The heat energy is also responsible for change in the state of matter from one of the state to the other state. It is also responsible for combustion and changing thermal energy into other sources of energy

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