Chemistry Final Review

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

• Solute
• Solvent
• Solution

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

• Increases
• Decreases
• Remains the same

Which of the following is a valid pair representing STP?

• 760 K & 101.3 kPa
• 1 atm & 0 K
• 1 atm & 0 C
• 760 mmHg & 0 K

Choose ALL that apply. Bases have the following properties...

• Turns pH paper blue
• Taste bitter
• Contains the OH- ion
• Has a pH greater than 7
• Contains the H+ ion

Define the following term: Specific heat

• the amount of heat energy needed to increase the temperature of 1 gram of a substance by 1°C
• the reactant that is used up in a chemical reaction that determines the amount of product(s) produced
• a measure of the hydrogen ion concentration of a solution
• mathematical formula that describes the relationships among temperature, pressure, volume, and moles in ideal gases
• the extent to which a solute dissolves in a solvent

Choose ALL that apply: What are the categories of a heterogenous mixture?

• Solutions
• Large Particles
• Suspensions
• Colloids

Using the following image, answer the question: When 20 grams of potassium chlorate, KClO3, is dissolved at 80 ºC, the solution can be correctly described as...

• Unsaturated
• Saturated
• Supersaturated

According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas?

• 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.

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?

• 204
• 22
• 1.38
• 0.005

Which of the following is a homogenous mixture?

• water
• a sugar-water solution
• whole wheat bread
• sugar