Spring Semester Chemistry Final (seniors)

Which of the following best defines a solution in chemistry?

• A pure substance made of only one type of atom

• A homogeneous mixture of two or more substances

• A substance that cannot be separated by physical means

• A mixture where the components are easily distinguished

What does the pH scale measure?

• The temperature of a solution

• The concentration of hydrogen ions in a solution

• The mass of a solute

• The volume of a solvent

What is the value of pH for a neutral solution at 25°C?

• 0

• 7

• 14

• 1

What is the term for the substance that is dissolved in a solution?

• Solvent

• Solute

• Suspension

• Colloid

Which law states that the volume of a gas is inversely proportional to its pressure at constant temperature?

• Charles's Law

• Boyle's Law

• Ideal Gas Law

• Combined Gas Law

A solution has a pH of 3. What can you conclude about this solution?

• It is basic

• It is neutral

• It is acidic

• It is a buffer

• 5

• 7

• 9

• 10

What is the formula for calculating pH?

A solution has a pH of 9. Which of the following best describes the solution?

• Strongly acidic

• Weakly acidic

• Weakly basic

• Strongly basic

Which of the following best describes the role of a solvent in a solution?

• It is the substance being dissolved

• It is the substance that does the dissolving

• It is always a solid

• It is always a gas