How does temperature relate to density?

Question

A
Temperature does not change density.
B
As temperature increases, density increases.
C
As temperature decreases, density decreases.
D
As temperature decreases, density increases.

Answer 1

The correct answer is: C. As temperature decreases, density increases.

Density is defined as mass per unit volume. Generally, when temperature increases, most substances expand, which leads to an increase in volume and a corresponding decrease in density. Conversely, when temperature decreases, substances typically contract, leading to a decrease in volume and an increase in density. However, it's important to note that there are exceptions, such as water, which behaves differently between 0°C and 4°C.