Acids & Bases

Which has a bitter taste?

• Base

• Acid

• flagella

• cila

What pH is the strongest base?

• 1

• 7

• 4

• 14

Why are bases useful as cleaning products?

• They dissolve fats and oils

• they are corrosive, so they eat anything

• they don't mix with water

• since bases are slippery, they slip dirt off of surfaces

Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?

• strongly acidic

• slightly acidic

• strongly basic

• slightly basic

Tags

NGSS.HS-LS1-3

Which of the following is most likely to be basic:

• Lemon juice

• Vinegar

• Laundry detergent

• Coke

Four substances were tested for pH, lemon juice (pH 2), baking soda (pH 9), bleach (pH 12), and milk (pH 6). Which of the following correctly lists the substances from most basic to acidic?

• lemon juice, milk, baking soda, bleach

• bleach, baking soda, milk, lemon juice

• milk, lemon juice, baking soda, bleach

• baking soda, bleach, lemon juice, milk

Which of these is a property of acidic solutions?

• they taste sour

• they feel slippery

• they are in many cleaning products

• they taste bitter

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

• Acid

• Alkaline

• Base

• Buffer

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-PS1-1

A solution has a pH of 7.0.  What would happen to the pH if H ions were added?

• pH would go up

• pH would go down

• pH would stay the same

• None of these