Solutions/Acid and Bases RETEST

The table shows the pH of several solutions. Which solution is the most acidic?

• vinegar

• milk

• water

• bleach

Zn(OH)₂ is an example of a...

• acid

• base

• salt

• water

H₃PO₄ is an example of a ...

• acid

• base

• salt

• non-electrolyte

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

An indicator will ______________ when it is in contact with an acid or base

• Bubble
• Form a new substance
• Change color
• Stay the same color

Match

• Acid

• OH-

• Base

• NaCl

• Salt

• H+

Match the following

• acid

• 7

• neutral

• lower than 7

• base

• higher than 7

Match these

• 6.7 milk

• strongly basic (alkaline)

• 7.35 human blood

• slightly acidic

• 13 ammonia

• strongly acidic

• 3.3 mountain dew

• slightly basic (alkaline)

Bases, also known as ​ (a)   will turn litmus paper ​ (b)   . This is because they have a pH ​ (c)   . They taste ​ (d)   .

• alkali and OH-
• blue
• above 7
• bitter
• below 7
• H+
• red
• sour

Acids, also known as ​ (a)   , will turn litmus paper ​ (b)   . This is because they have a pH ​ (c)   . They taste ​ (d)   .

• H+
• red
• below 7
• sour
• bitter
• above 7
• blue