Chemistry Final Review

Front

The substance that dissolves in a solution is called the ____.

Back

Solute

Front

What happens to the pressure of a gas if the temperature is decreased?

Back

Decreases

Front

Which of the following is a valid pair representing STP? Options: 760 K & 101.3 kPa, 1 atm & 0 K, 1 atm & 0 C, 760 mmHg & 0 K

Back

1 atm & 0 C

Front

Specific heat

Back

the amount of heat energy needed to increase the temperature of 1 gram of a substance by 1°C

Front

When 20 grams of potassium chlorate, KClO3, is dissolved at 80 ºC, the solution can be correctly described as...

Back

Unsaturated

Front

According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas? Options: The collisions between the gas particles cannot result in a transfer of energy between the particles., The motion of the gas particles is random and straight-line., The separation between the gas particles is smaller than the size of the gas particles themselves., The force of attraction between the gas particles is strong.

Back

The motion of the gas particles is random and straight-line.

Front

Use the Ideal Gas Law for the following problem. PV=nRT (R= 0.0821) If I have 4 moles of a gas at a pressure of 5.6 atm and a volume of 12 liters, what is the temperature?

Back

The temperature is calculated using the formula T = PV/(nR). Substituting the values, T = (5.6 atm * 12 L) / (4 moles * 0.0821 L atm / K mol). This gives T = 204.1 K.

Front

Which of the following is a homogenous mixture? Options: water, a sugar-water solution, whole wheat bread, sugar

Back

a sugar-water solution

Front

Define the following term: pH

Back

a measure of the hydrogen ion concentration of a solution

Front

Ideal gas law

Back

mathematical formula that describes the relationships among temperature, pressure, volume, and moles in ideal gases