Introduction to Acids and Bases

Which of the following substances contain acid?

• An orange

• Bleach

• Distilled water

• Washing powder

What is the pH of pure water?

• pH 7

• pH 3

• pH 12

• pH 8

Acid in vinegar:

• Hydrochloric acid

• Sulfuric acid

• Acetic acid

• Carbonic acid

Human blood has a pH of between 7.38 and 7.42. This means that the blood is ________.

• very acidic

• slightly acidic

• very basic

• slightly basic

Tags

NGSS.HS-LS1-3

Soap is a weak base.  What is true about the taste of bases?

• they taste sour

• they taste sweet

• they taste bitter

• they taste salty

Differentiate between Base and alkaline

• Alkaline is corrosive and base is bitter

• Alkaline is blue in colour and base is red in colour

• Alkaline is soluble and base is insoluble

• alkaline is insoluble and base is soluble

Tags

NGSS.MS-PS1-2

Which of the following are properties of acids?

• They conduct electricity when dissolved in water

• They taste sour

• They react with metals to produce hydrogen gas

• All of the answer choices are correct

Values from 0-14 that determine the acidity of a solution

• Punnett Square

• Matrix

• pH scale

• Math number line 

Which of the following statements is correct?

• Blue litmus paper turns red when placed in a base.

• Red litmus paper turns blue when placed in a base.

• Blue litmus paper stays blue when placed in an acid.

• Red litmus paper stays red when placed in a base.

Which of the following is an acid?

• shampoo

• baking soda

• orange juice

• water