Acids and Bases

What can be said of the solution below?

• It's an acid

• It's a base

• It's neutral

• There is not enough information to tell

What happens to the pH value of a solution as the concentration of hydronium ions increases?

• The pH value increases

• The pH value decreases

• The pH value does not change

• The pH value fluctuates unpredictably

What happens during a neutralization reaction?

• An acid and a base react to form a gas

• An acid and a base react to form a salt and water

• An acid reacts with a metal to form hydrogen gas

• A base reacts with carbon dioxide to form a salt

Tags

NGSS.MS-PS1-5

How does the pH scale range?

• 0 to 7

• 0 to 10

• 0 to 14

• 1 to 14

A(n) _______ is a substance with a pH greater than 7.

• Base

• Acid

• Buffer

• Water

The pH Scale measures:

• Positive or negative ions

• Acids and Bases

• Electricity

• None of These

What is the pH value of pure water, which represents the point of neutrality on the pH scale?

• 5

• 7

• 10

• 14

Which of the following substances is likely to have a pH value less than 7, making it acidic?

• Ammonia solution

• Soap

• Lemon

• Blood

Which of the following is true about bases compared to pure water?

• Bases have a lower concentration of hydronium ions and a pH lower than 7

• Bases have a higher concentration of hydronium ions and a pH lower than 7

• Bases have a lower concentration of hydronium ions and a pH higher than 7

• Bases have a higher concentration of hydronium ions and a pH higher than 7

A(n) ______ is a substance with a pH less than 7

• Acid

• Alkaline

• Base

• Buffer