Question

which statement is a description of boyles law?
○ the temperature and volume of a gas are directly proportional when pressure is constant.
○ the temperature and volume of a gas are inversely proportional when pressure is constant.
○ the volume and pressure of a gas are directly proportional when temperature is constant.
○ the volume and pressure of a gas are inversely proportional when temperature is constant.

Explanation:

Boyle's law states that for a fixed amount of gas at constant temperature, the pressure and volume of the gas are inversely proportional. Let's analyze each option:

• First option: Relates temperature and volume (Charles's law - directly proportional at constant pressure), not Boyle's.
• Second option: Incorrect relation (inverse for temp - volume at constant pressure is not Boyle's; Boyle's is about pressure - volume at constant temp).
• Third option: Boyle's law is inverse, not direct, between pressure and volume at constant temp.
• Fourth option: Matches Boyle's law definition: volume and pressure are inversely proportional when temperature is constant.

Answer:

The volume and pressure of a gas are inversely proportional when temperature is constant.