Question

F. State whether the following statements
are true or false. If false, rewrite the
correct form of statements.

1. Molecules of whole universe are identical.

2. Molecules of a solid can move freely
within it.

3. A solid can be stored independently
without a vessel.

4. Boiling and condensation points of a pure
substance are having the same value.

5. Solids and liquids are closely packed.

6. A liquid can be compressed slightly but a
gas cannot be compressed.

7. The kinetic energy of molecules of a
substance increases with an increase in
temperature.​

Answer 1

Answer:

1) False

2)False

3)True

4)True

5)False

6)False

7)True

Explanation:

1) Molecules of the whole universe are not identical cause atoms join together to form molecules of different substances. Atoms are similar but join to form different kinds of molecules.

2)Molecules of a solid are tightly packed, hence cannot move freely.

3) As all the molecules of a solid are closely packed they are held together tightly and can be stored independently.

4) Boiling and condensation points of pure substances are always equal.

5)Solids are closely packed but liquids are loosely packed in comparison to a solid object.

6) Liquid molecules are loosely packed than solids. But molecules in a gas are more loosely packed than liquids. Thus liquids can be compressed even gases can be compressed more to convert them into liquids.

7) Kinetic energy of a substance increases with an increase in temperature cause when heat is given to that substance the molecules move vigorously producing more Kinetic energy.

Answer 2

Answer:

1. False

2. False

3. True

4. True

5. False

6. False

7. True