Q:

What does Charles' law state?

A:

Charles' law states that at a fixed pressure a quantity of gas has a volume directly proportional to its temperature. This means that gas kept at a constant pressure increases or decreases in volume as temperature does the same. As temperature rises, the gas molecules or particles are excited and push at surfaces with more force, creating a greater volume.

Keep Learning

Charles' law is also known as the law of volumes, with an equation indicating that volume divided by temperature equals the constant. This equation is easier to determine if a gas is maintained at a constant pressure and the constant changes only by the increase or decrease in temperature.

This gas law was discovered in the 1780s by a scientist named Jacques Charles who formulated the original law that was published decades later. This law is still commonly taught today and led to discoveries such as liquefied gases and the behavior of gas as it nears a temperature of absolute zero. Charles' law is related to the kinetic theory of gases, in which gases are large numbers of small particles that collide with each other as well as the walls of their container at a constant rate. Temperature adds energy to these particles, increasing the rate at which they move and collide with other particles.

Sources:

Related Questions

• A:

Thermal expansion occurs when a transfer of heat causes matter to change in volume in response to a change in temperature. When a substance heats up, the particles within it begin moving around, which creates space between the particles. As the space between the particles expands, the substance begins to increase in size.

Filed Under:
• A:

Boyle’s law describes the relationship between volume and pressure in a fixed mass of gas at a constant temperature. It states that the pressure of a gas is inversely proportional to the volume of a gas at a constant temperature.

Filed Under:
• A:

The ideal gas law describes a relationship between pressure (P), volume (V), temperature and number of moles (n) in terms of the gas constant (R) for an ideal gas. The ratio of (PV) to (nT) should be equal to the gas constant as shown in the ideal gas equation PV = nRT. The ideal gas law assumes that the gas molecules are ideal and do not have any volume and that there are no forces acting on them except during collisions. It was designed to understand the effects of pressure, volume and temperature on gases while excluding the variables of real-world conditions.