Gay-Lussac's Law describes the relationship between the pressure and temperature of a gas when the volume and number of moles are held constant. It states that the pressure of a gas is directly proportional to its absolute temperature. This means if you increase the temperature of a gas, you also increase its pressure, and vice versa, as long as the volume and amount of gas remain the same. Mathematically, Gay-Lussac's Law is expressed as:
$\frac{P_1}{T_1} = \frac{P_2}{T_2}$
Where $P_1$ and $T_1$ are the initial pressure and temperature, and $P_2$ and $T_2$ are the final pressure and temperature.
Match the term with its correct definition:
| Term | Definition |
|---|---|
| 1. Pressure | A. A measure of the average kinetic energy of the particles in a substance. |
| 2. Temperature | B. The amount of space a substance occupies. |
| 3. Volume | C. A state of matter with no fixed shape or volume. |
| 4. Gas | D. The force exerted per unit area. |
| 5. Kelvin | E. The SI unit of temperature; absolute zero is 0 K. |
Complete the following paragraph using the words provided: proportional, constant, Gay-Lussac's, temperature, pressure.
________ Law states that the ________ of a gas is directly ________ to its ________, provided the volume and number of moles are kept ________.
Explain in your own words why it's important to use the Kelvin scale when performing calculations using Gay-Lussac's Law. What would happen if you used Celsius instead?
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