Water and pH

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

• Acid
• Alkaline
• Base
• Buffer

The pH scale is a range from:

• 1-7
• 0-14
• 1-5
• 1-20

Complete the sentence.
A substance that is more basic has a _____ pH than a substance that is acidic.

• lower
• higher
• the same
• none of the above

In a test of pH levels, a baking soda has a pH of 9 and bleach has a pH of 12. What is true about there relationship?

• Both of the solution are Bases

• Both of the solution are Acids

• The Baking soda is an acid and the Bleach is a base

• The baking soda is a base and the Bleach is an Acid.

A base is a substance

• That releases OH- ions when dissolved in water

• That releases H+ ions when dissolved in water

• Does not release any ions when dissolved in water

• None of the above

Tags

NGSS.MS-PS1-2

An acid

• is a substance that releases H+ ions when dissolved in water

• is a substance that does not release any ions when dissolved in water

• is a substance that releases OH- when dissolved in water

• releases an equal amount of OH- and H+ ions when dissolved in water

Tags

NGSS.MS-PS1-2

Water has a neutral because

• it has more H+ ions than OH-

• it has more OH- ions than H+

• it has an equal amount of H- and OH+ in solution

• it has an equal amount of H+ and OH- in solution

Tags

NGSS.HS-ESS2-5

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

• Hydrochloric acid
• cabbage
• milk

Tags

NGSS.MS-PS1-2

Which of the following lists the bonds in order from weakest to strongest?

• Covalent, Hydrogen, Ionic

• Hydrogen, Ionic, Covalent

• Ionic, Covalent, Hydrogen

• Hydrogen, Covalent, Ionic

Which property of water allows it to stick to other water molecules and create surface tension?

• Cohesion
• Adhesion
• Heat Capacity
• Universal Solvency

Tags

NGSS.HS-ESS2-5