Phy Sci Unit 7 T

If Orange Juice has a pH of 5.7 it is classified as a ________ __________.

• Weak acid
• Weak base

• Strong acid

• Strong base

In the reaction HCl + KOH ⟶ KCl + H₂O, HCl is a(n) __________ and KCl is a(n) __________.

• Acid, salt
• Acid, base

• base, salt

• base, acid

A base will turn litmus paper ________, while an acid will turn it ________.

• Blue, red
• Red, red

• Blue, blue

• Blue, orange

If a substance has a pH of 13, it is classified as a ____________________.

• Strong base
• Strong acid

• Weak base

• Weak acid

Most cleaners are classified as a(n) _____________.

• Base
• Acid

• both

• neither

A(n) ________ taste bitter and a(n) ________ taste sour.

• Base, acid
• Acid, base

• Acid, acid

• Base, base

Colorless phenolphthalein will turn red in the presence of a(n) __________.

• Base
• Acid

• both

• neither

Which of the following is not an indicator that used in lab?

• Blue phenolphthalein

• Red/Pink phenolphthalein

• Red litmus paper

• Blue litmus paper

A base forms what kind of ions in solution?

• Oxygen (O⁻²)

• Hydroxide (OH⁻¹)

• Hydronium (H₃O⁺)

• Hydrogen (H⁺)

Which solution is the most acidic?

• Apple juice, pH=3

• Pure water, pH=7

• Hand soap, pH=10

• Drain cleaner, pH=14