Unit 11: Acid Base Theory

Acids are substances that release positively charges _________ ions in water

• Hydrogen

• Hydroxide

• Sodium

• Chloride

A _______________ is two or more substances that are physically blended but are not chemically bonded together.

• substance

• solute

• solution

• mixture

The table shows the pH of several solutions. Which solution has the greatest concentration (amount) of H⁺ ions?

• vinegar

• milk

• water

• bleach

Solutions that conduct electricity when dissolved in water ___.

• are called electrolytes

• are always salts

• can be covalent compounds

• are never acids or bases

Ca(OH)₂ is an example of a(n)

• Acid

• Base

• Neutral substance

• Salt

Which type of ion does a base produce when it is dissolved in water?

• oxide
• oxygen
• hydrogen
• hydroxide

All of the following are electrolytes EXCEPT

• covalent substances

• acidic substances

• alkaline (basic) substances

• salts (ionic substances)

Describe a solute.

• part of solution present in largest amount

• part of a solution that gets dissolved

• water

• part of the solution that surrounds and breaks apart substances

What does it mean to dilute a solution?

• lower the concentration of solute per solvent
• increase the concentration of solute per solvent

You can make a solution more concentrated by adding __________.

• solute
• solvent
• water