Question

1. describe the difference between the arrangement of atoms in solids, liquids, and gases.
2. which of the following is a true statement?

a. in the gas state, atoms move around freely
b. liquids do not change shape easily
c. gas molecules move more slowly as they are heated

1. which has its atoms farthest apart?

a. solid
b. liquid
c. gas

Explanation:

1. In solids, atoms are closely - packed in a regular pattern with little movement. In liquids, atoms are close together but can move past one another. In gases, atoms are far apart and move freely in all directions.
2. In the gas state, atoms move around freely. Liquids change shape easily to fit their container, and gas molecules move faster as they are heated. So, statement a is true.
3. Gas has its atoms farthest apart compared to solids and liquids due to weak intermolecular forces.

Answer:

1. Solids: closely - packed, regular pattern, little movement; Liquids: close together, can move past one another; Gases: far apart, move freely.
2. a. In the gas state, atoms move around freely
3. c. Gas