Question

Please answer the following quickly.

1)Explain briefly another activity that helps to prove the idea that solid is discontinuous.

2) What is the expandable metal used in a thermometer?

3)

a.Explain the way the temperature changes in am experiment to prove that a pure substance in a liquid state has definite boiling point?

b. What is the maximum temperature reafing of the above mentioned activity?

c. What is the conclusion of the above experiment?

Answer 1

1) Another activity that helps to prove the idea that solid is discontinuous is the fact that solids can have different densities, which means that they have different arrangements of particles.

2) The expandable metal used in a thermometer is usually mercury or alcohol.

3)

a. In an experiment to prove that a pure substance in a liquid state has a definite boiling point, the temperature of the substance is gradually increased while the pressure is kept constant until it reaches its boiling point. At this point, the temperature remains constant, even if more heat is added to the system.

b. The maximum temperature reading of the above mentioned activity is the boiling point of the pure substance.

c. The conclusion of the above experiment is that a pure substance in a liquid state has a definite boiling point, which remains constant as long as the pressure is kept constant.