Chemistry: Acid and Base

Which of the following word pairs correctly completes the sentence below?

_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.

• Acids; pH less than 7

• Acids; pH greater than 7

• Bases; pH greater than 7

• Bases; pH less than 7

The _______ scale measures the strength of acids and bases.

NaOH may be found in drain cleaners and as a component of soaps. Is NaOH an acid or a base?

• Acid

• Base

• Neither (Neutral)

Select the name for the following acid: H₃PO₄

• Phosphoric acid

• Phosphorous acid

• Hydrophosphoric acid

Which is NOT a property of acids?

• slippery

• pH below 7

• react with metals

• contain H¹⁺ ions

Which of these is a property of acidic solutions?

• they taste sour

• they feel slippery

• they are in many cleaning products

• they taste bitter

Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?

• strongly acidic

• slightly acidic

• strongly basic

• slightly basic

Tags

NGSS.HS-LS1-3

Which is NOT a property of bases?

• caustic

• slippery

• pH below 7

• bitter

A salt is formed when nitric acid combines with sodium hydroxide. What are present in the salt that forms?

• Sodium chloride

• sodium ions and nitrate ions

• only sodium ions

• only nitrate ions

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What are the products if magnesium reacts with hydrochloric acid?

• Magnesium chloride + Hydrogen

• Magnesium sulfate + Hydrogen

• Magnesium oxide + Hydrogen

• Magnesium sulfide + Hydrogen

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5