Ohio Assessment for Educators (OAE) Integrated Science (024) Practice Exam

Boyle's Law states a relationship between which two variables?

1. Pressure and temperature

2. Volume and moles

3. Pressure and volume

4. Temperature and volume

The correct answer is: Pressure and volume

Boyle's Law describes the inverse relationship between pressure and volume of a gas at constant temperature. According to the law, as the volume of a gas decreases, the pressure increases, provided the temperature remains constant. This law is mathematically expressed as \( PV = k \), where \( P \) is the pressure, \( V \) is the volume, and \( k \) is a constant for a given amount of gas at a constant temperature. In practical terms, Boyle's Law implies that if you compress a gas (reducing its volume), the molecules within that gas are forced closer together, leading to more frequent collisions with the walls of the container, which results in an increase in pressure. Thus, when evaluating which two variables Boyle's Law relates, pressure and volume are the correct pair.