8th Grade 5.4

Multiple Choice

Which of the following substances is NOT an acid?

• HCl

• H₂SO₄

• NaOH

• HNO₃

Multiple Choice

The negative ion found in bases is the

• hydroxide ion

• hydrogen ion

• carbonae ion

• water ion

Multiple Choice

Which of the following substances is most likely to have a pH close to 7?

• lemon

• antacid

• baking soda

• vinegar

Multiple Choice

Which of the following statements is NOT true about neutralization?

• An acid & a base are the reactants

• A salt & water are the products

• There is no color change in litmus paper when the reaction is over

• It produces an acid-base mixture that is more acidic than both the individual starting solutions

Multiple Choice

A solution with a pH of 2 is _____ acidic than(as) a solution with a pH of 6.

• equally

• less

• more

Multiple Choice

Chemists use the _____ to express the concentration of hydrogen ions in a solution.

• pH scale

• valence

• atomic number

Multiple Choice

An acid produces _____ ions in water.

• helium

• hydrogen

• oxygen

Multiple Choice

Substances with pH values close to 14 are strong _____.

• acids

• bases

• solutions

Multiple Choice

A strip of blue litmus paper placed in a beaker of vinegar will turn _____.

• red

• white

• black

Multiple Choice

A base produces _____ ions in water.

• metal

• hydroxide

• salt