Question

Which of the following statements is correct in regards to density? Pressure is directly proportional to density. Pressure is inversely proportional to density. Temperature is directly proportional to density. Temperature and pressure do not affect density.

Answer 1

The answer to this question would be: Pressure is directly proportional to density.
To answer this question, you need to know the formula needed to calculate density. Density is mass divided by volume. That means higher volume will lower density.
Higher pressure will result in lower volume, so it will increase the density. Higher temperature will cause the volume to be expanded so it's inversely proportional to density.

Answer 2

Density is defined as the ratio of mass to the amount of matter i.e. volume.

The mathematical expression is given as:

`density = (mass)/(volume)`

Now, from the mathematical expression, density is inversely proportional to volume and directly proportional to mass implies with decrease in volume, density is also decreases and with increase in mass, density is also increases.

Low volume (compression) is due to high pressure, results in increase in density and high temperature results large volume (expansion) implies temperature is inversely proportional to density.

Thus, pressure is directly related to density implies increase in pressure results in increase in density.

Hence, first option is the correct answer.