Pressure Definition - Intro to Chemistry Key Term

Definition

Pressure is the force exerted per unit area on the surface of an object. It is commonly measured in units like Pascals (Pa) or atmospheres (atm).

Pressure is calculated using the formula $P = \frac{F}{A}$, where $P$ is pressure, $F$ is force, and $A$ is area.
Standard atmospheric pressure at sea level is approximately 101.3 kPa or 1 atm.
The behavior of gases under different pressures can be described by Boyle's Law, which states that for a fixed amount of gas at constant temperature, pressure and volume are inversely proportional: $P_1V_1 = P_2V_2$.
Gas pressure can be measured using a manometer or a barometer.
In the ideal gas law, pressure ($P$) is one of the variables in the equation $PV = nRT$, where $n$ represents moles of gas and $R$ is the ideal gas constant.

States that for a fixed amount of gas at constant temperature, the volume of the gas varies inversely with its pressure.

$PV = nRT$, an equation describing the state of an ideal gas in terms of its pressure, volume, temperature, and number of moles.

Manometer: A device used to measure the pressure of gases.