Acid, Base, & Solutions

Acids are substances that release positively charges _________ ions in water

• Hydrogen

• Hydroxide

• Sodium

• Chloride

What is the purpose of an "indicator"?

• changes color if a chemical reaction occurs

• changes color if a physical change occurs

• changes color in the presence of an acid or base

• changes color when a salt dissolves in water

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)

What makes a solution supersaturated?

• No solute is dissolved in it

• It holds the maximum amount of solute fo the temperature.

• More solute is dissolved than the solution can usually hold at that temperature.

• Less solvent is dissolved than the solution can hold at that temperature

Solution where more solute can still be dissolved at the given temperature. 

• Saturated
• Unsaturated
• Mixture
• Homogeneous solution

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