M8D5 Homework 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 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

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

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

• 2

• 20

• 10

• 100

What does pH measure?

• the amount of hydrogen (H⁺) ions

• the amount of hydroxide (OH^-) ions

• amount of water

• all of the above

Tags

NGSS.MS-PS1-1

For a solution, pH + pOH =

• 7

• 14

• 1.0 x 10^-14

• -log (1.0 x 10 ^-14)