Acids and Bases Basics

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

Tags

NGSS.HS-PS1-1

Which type of ion does a base produce when it is dissolved in water?

• oxide
• oxygen
• hydrogen
• hydroxide

On the pH scale what numbers are bases?

• 8-14
• 0-7
• 7
• 1

The pH scale measures...

• ...the strength of an acid.
• ...the strength of hydrogen ions.
• ...the concentration of hydrogen ions.
• ...the concentration of an acid

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

_______ are corrosive substances characterized as having a oily feel, a bitter taste, and a _______.

• Acids; pH less than 7

• Acids; pH greater than 7

• Bases; pH greater than 7

• Bases; pH less than 7

Which type of ion does an acid produce when it is dissolved in water?

• oxide

• oxygen

• hydronium

• hydroxide

True or false: a neutral solution has equal amounts of H⁺ and OH^-.

• True

• False

Four solutions are tested and found to have the following pH values. Which of these substances would be considered the weakest acid?

• Lemon Juice - pH=2

• Apple Juice - pH=4.5

• Shower Cleaner - pH=5.5

• Hydrogen Peroxide - pH=7

What completely ionizes in solution?

• Weak acids

• Strong acids

• Strong Salts

• Neutral salts

1. An example of an acidic oxide is:

• MgO

• CO₂

• BaO

• Na₂O