3.18 Acid, Base, pH Lab Review

What is another name for base?

• Phenolphtalein
• Alkaline
• Acid
• pH

Four substances were tested for pH, lemon juice (pH 2), baking soda (pH 9), bleach (pH 12), and milk (pH 6). Which of the following correctly lists the substances from most basic to acidic?

• lemon juice, milk, baking soda, bleach

• bleach, baking soda, milk, lemon juice

• milk, lemon juice, baking soda, bleach

• baking soda, bleach, lemon juice, milk

Acids are substances that release positively charges _________ ions in water

Bases turn red litmus paper _________.

The _______ scale measures the strength of acids and bases.

A sugar solution does not change the color of both blue and red litmus paper. This means the sugar solution is a ________.

• acid

• base

• neutral

Bases react with

• salts to produce acids and water.

• water to produce acids and salts.

• neither acids, salts, nor water.

• acids to produce salts and water.

The table shows student data from an investigation designed to find a solution that is both an acid and a strong electrolyte. Based on the data, which solution is both an acid and a strong electrolyte?

• Solution 1

• Solution 2

• Solution 3

• Solution 4

A student has 2 clear solutions in 2 separate flasks. Solution 1 has a pH of 4 and Solution 2 is unknow. The student mixes the 2 solutions together and checks the pH. The pH reads 5. This means the second solution must have...

• fewer suspended solids

• a lower temperature

• more dissolved salt (NaCl) particles

• a higher concentration of OH^- ions

If a base were added to a solution of pH 9, the pH would...

• increase

• decrease