Question

which of the following is true?
a liquids are denser than gases
b liquids are less dense than gases
c liquids and gases are the same density
d none of the above

Explanation:

To determine the correct option, we analyze the density of liquids and gases. In general, the particles in a liquid are much closer together than in a gas. Density is defined as mass per unit volume ($
ho = \frac{m}{V}$). Since liquid particles are more closely packed, for the same volume, a liquid has more mass (and thus higher density) than a gas.

• Option a: "Liquids are denser than gases" aligns with the particle arrangement and density definition.
• Option b: Contradicts the fact that liquid particles are closer than gas particles, so liquids should be denser.
• Option c: Liquids and gases have different particle arrangements, so their densities can't be the same.
• Option d: Since option a is correct, this is invalid.

Answer:

a. Liquids are denser than gases