# Boyle's Law

Gases | The Ideal Gas Law.

Tip: This isn't the place to ask a question because the teacher can't reply.

## Key Questions

• Boyle's law studies the relationship between pressure and volume. It's an inverse relationship as it is indicated that when pressure increases, volume decreases and vice-versa.

It can be summarized as...

${P}_{1} {V}_{1} = {P}_{2} {V}_{2}$

Here is a video which shows an example of how you can solve a gas problem using Boyle's law.

video from: Noel Pauller

• Boyle's Law is a relationship between pressure and volume at a constant temperature.

${P}_{1} {V}_{1} = {P}_{2} {V}_{2}$

In this relationship, pressure and volume have an inverse relationship when temperature is held constant.

If there is a decrease in the volume there is less space for molecules to move and therefore they collide more often, increasing the pressure. If there is an increase in the volume the molecules have more space to move, collisions happen less often and the pressure is decreased.

vV ^P ^V vP the relationship is inverse.

However if temperature is involved the relationship between the three values is the combined gas law.

$\frac{P V}{T} = \frac{P V}{T}$

SMARTERTEACHER

• Boyle's law describes how the pressure of a gas tends to decrease as the volume of a gas increases.

Boyle's Law

When the Volume Decreases, the Pressure increases.

(mass and temperature is constant)

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