How is a change in temperature related to the pressure of a contained gas? As temperature increases pressure remains constant. As temperature increases pressure increases. As temperature increases pressure either increases or decreases depending on the gas. As temperature increases pressure decreases.

## Step 1<br />The relationship between the temperature and pressure of a contained gas is described by Gay-Lussac's Law. This law states that the pressure of a gas is directly proportional to its absolute temperature, provided the volume and the amount of gas remain constant. <br /><br />## Step 2<br />This means that if the temperature of the gas increases, the pressure of the gas also increases, assuming the volume and the amount of gas remain constant. <br /><br />## Step 3<br />Therefore, the correct answer is "As temperature increases, pressure increases."