Intro to acid , bases and pH

Multiple Choice

According to Arrhenius, what is the definition of an ACID?

• a substance that contains hydroxide and ionizes to produce OH-

• a substance that contains hydrogen and ionizes to produce H+

• a substance that contains hydrogen and ionizes to produce OH-

• a substance that contains hydroxide and ionizes to produce H+

Multiple Choice

According to Bronsted-Lowry, what is the definition of an BASE?

• a substance that donates a hydrogen (H+) ion

• a substance that donates a hydroxide (OH-) ion

• a substance that accepts a hydrogen (H+) ion

• a substance that accepts a hydroxide (OH-) ion

Multiple Choice

A sour taste is a characteristic of:

• acids

• bases

• neutral

• pH scale

Multiple Choice

Which is a characteristic of a base?

• tastes sour

• found mostly in foods

• feels slippery

• turn litmus paper red

Multiple Choice

Name HF

• hydrofluoric acid

• Hypofluoric acid

• hydrogen fluorine acid

• fluoric acid

Multiple Choice

What is the formula for Nitrous acid?

• HNO₂

• H₂NO

• H₂NO₂

Multiple Choice

Hydroiodic acid

• H2I2

• H1I1

• HI

Multiple Choice

Strong acids and bases...

• do not dissociate into ions (non-electrolyte)

• partially dissociate into ions (weak electrolyte)

• completely dissociate into ions (non-electrolyte)

• completely dissociate into ions (strong electrolyte)

Multiple Choice

Hydrochloric (HCl) is a

• Weak Acid

• Weak Base

• Strong Acid

• Strong base

Multiple Choice

Sodium hydroxide (NaOH) is a

• Weak Acid

• Weak Base

• Strong Acid

• Strong base

pH

• The quantitative measure of the acidity or basicity of aqueous or other liquid solutions.

• Translates the values of the concentration of the hydrogen ion—which ordinarily ranges between about 1 and 10⁻¹⁴ gram-equivalents per litre—into numbers between 0 and 14.

Fill in the Blank

The _____ scale measures the acidity of substances.

What is pH

noun:

quantitative measure of the acidity or basicity of aqueous or other liquid solutions.

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Open Ended

Identify where water is situated on the pH scale and explain why.

Multiple Choice

What pH is the strongest base?

• 1

• 7

• 4

• 14

Multiple Choice

Turns litmus red

• Acids
• Bases
• All

Multiple Choice

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