Intro to Acids and Bases

According to the pH range which substance is more acidic than lemon juice (a)  

• Hydrochloric acid
• cabbage
• milk

Neutralization reactions

• formed from joining positive and negative ions 

• increases OH ions

• forms a salt and water

• increases H2O ions

Acids are __________, which means they "eat away" at other materials.

• transitional metal

• alkaline

• flammable

• corrosive

Acidic solutions exhibit a higher ratio of H₃O⁺ ions, known as...

• neutrons

• hydroxide

• electrons

• hydronium

When you place blue litmus paper into an unknown clear solution, the blue litmus paper turns red.

Which of the following represents the most logical conclusion?

• The substance has a pH value of "2".

• The substance is a base.

• The substance has a pH value of "7".

• The substance is acidic.

What range of values on the pH scale represent solutions with a higher ratio of hydroxide (OH^-) ions?

• below 7

• 7

• above 7

• 0-14

According to the Arrhenius theory, an acid is a substance that contains ... and ionises in an aqueous solution to give ...

• hydroxide ions

• hydrogen ions

• hydrogen, hydroxide ions

• hydroxide, hydrogen ions

According to Arrhenius theory, a base is a substance that contains ... and ionises in an aqueous solution to give ...

• hydrogen ions

• hydrogen group

• hydroxide ions

• hydrogen ions

According to the Brønsted-Lowry theory, an acid is a substance that exhibits a tendency to ...

• donate an electron

• accept an electron

• donate a proton

• accept a proton

According to the Brønsted-Lowry theory, a base is a substance that exhibits a tendency to ...

• donate an electron

• accept a proton

• donate a proton

• accept an electron