Question

Take about 150 g of ice in a beaker and suspend a laboratory thermometer so that its bulb is in contact with the ice, as in Fig. 1.6. Start heating the beaker
a low flame. Note the temperature when the ice starts melting. Note the temperature when all the ice has converted into water. Record your observations for this conversion of solid to liquid state. Now, put a glass rod in the beaker and heat while stirring till the water starts boiling. Keep a careful eye on the thermometer reading till most of the water has vaporised. Record your observations for the conversion of water in the liquid state to the gaseous state.give me the aim conclusion and observation of this activity

Answer 1

Answer:

take 150g of ice in a beaker and suspend a laboratory thermometer so that the bulb is in contact with ice. Start heating and note the temp. when the ice starts melting. Finally, note the temp when all the ice is completely melted.

we observed that there is no change in the temp. during the change of state from solid to liquid. As we know that for the change of state, heat is required thus substances absorb heat during meltinv without change in its temp.

i hope this answer is helpful !!

Answer 2

Answer:

process-

• Take about 150 g of ice in a beaker and suspend a laboratory thermometer so that its bulb is in contact with the ice, as in Fig. 1.6.
• Start heating the beaker on a low flame.
• Note the temperature when the ice starts melting.
• Note the temperature when all the ice has converted into water.
• Record your observations for this conversion of solid to liquid state.
• Now, put a glass rod in the beaker and heat while stirring till the water starts boiling.
• Keep a careful eye on the thermometer reading till most of the water has vaporised.
• Record your observations for the conversion of water in the liquid state to the gaseous state.

observation-

we observed that between the change from solid to liquid state the temperature did not change. it remained 0°C

conclusion-

When a solid melts, its temperature remains the same.