Acids Bases pH pOH

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

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

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

At what pH would all three indicators appear as yellow?

• 1.7

• 2.7

• 4.7

• 8.7

Tags

NGSS.MS-PS1-2

Phenolphthalein is pink in an aqueous solution having a pH of

• 2

• 7

• 5

• 12

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

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

According to the diagram, which part of the digestive system has the most basic enviroment?

• Mouth

• Stomach

• Pancreas

• Small intestine