pH

The pH scale is a range from:

• 1-7
• 0-14
• 1-5
• 1-20

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

• Acid
• Alkaline
• Base
• Buffer

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

• Base
• Acid
• Buffer
• Water

What is the only substance with a neutral pH of 7?

• Milk
• Orange Juice
• Water
• Blood

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

A pH of 3 is how many times more acidic than a pH of 5?

• 2

• 20

• 10

• 100

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 does not produce any ions

• 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

Bleach is a strong base, what is the pH level of bleach?

• 13
• 14
• 1
• 2

Tags

NGSS.MS-PS1-2