Explain an activity to show the effect of change of temperature on the solid.
Explain an activity to show the effect of change of temperature on the solid.
Effect of change of temperature on the solid
- The change in the states of matter with increasing or decreasing temperature.
- On heating a solid substance, the kinetic energy of its constituent particles increases therefore, the particles start vibrating with greater speed.
- The heat supplied is used for changing the solid state into a liquid state by overcoming the inter-particle attraction force.
- The liquid substance is heated, the kinetic energy of its constituent particles increases and due to this the particles start vibrating with greater
speed.
Diagram
Conversion of ice into water Conversion of water into water vapor
Explanation:
Procedure:
- Take about 150 g of ice in a beaker.
- Suspend a laboratory thermometer so that its bulb is in contact with the ice as shown in the given above.
- Start heating the beaker on a low flame.
- Note the temperature when the ice starts melting.
- Note the temperature when all the ice gets converted into water.
- Record your observations for this conversion of solid to liquid state.
- Put a glass rod in the beaker and stir it till the water starts boiling.
- Keep a careful eye on the thermometer reading till most of the water has vaporized.
- Record your observations for the conversion of water in the liquid state to the gaseous state.
Observation:
On increasing the temperature of solids, the kinetic energy of the particles increases. Due to the increase in kinetic energy, the particles start
vibrating with greater speed.
Conclusion:
The energy supplied by heat overcomes the forces of attraction between the particles. The particles leave their fixed positions and start moving more
freely. A stage is reached when the solid melts and is converted into a liquid. This stage is called the melting point of the solid.
Effect of change of temperature on the solid
- The change in the states of matter with increasing or decreasing temperature.
- On heating a solid substance, the kinetic energy of its constituent particles increases therefore, the particles start vibrating with greater speed.
- The heat supplied is used for changing the solid state into a liquid state by overcoming the inter-particle attraction force.
- The liquid substance is heated, the kinetic energy of its constituent particles increases and due to this the particles start vibrating with greater
speed.
Diagram
Conversion of ice into water Conversion of water into water vapor
Explanation:
Procedure:
- Take about 150 g of ice in a beaker.
- Suspend a laboratory thermometer so that its bulb is in contact with the ice as shown in the given above.
- Start heating the beaker on a low flame.
- Note the temperature when the ice starts melting.
- Note the temperature when all the ice gets converted into water.
- Record your observations for this conversion of solid to liquid state.
- Put a glass rod in the beaker and stir it till the water starts boiling.
- Keep a careful eye on the thermometer reading till most of the water has vaporized.
- Record your observations for the conversion of water in the liquid state to the gaseous state.
Observation:
On increasing the temperature of solids, the kinetic energy of the particles increases. Due to the increase in kinetic energy, the particles start
vibrating with greater speed.
Conclusion:
The energy supplied by heat overcomes the forces of attraction between the particles. The particles leave their fixed positions and start moving more
freely. A stage is reached when the solid melts and is converted into a liquid. This stage is called the melting point of the solid.
