Acids and Bases

Explain what happens when a strong acid and a strong base are poured into the same container.

• they form separate layers

• they mix physically but not chemically

• they break apart into separate elements

• they react chemically to form a salt

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of these solutions is an acid?

• Dish Soap: pH of 12

• Tomato Soup: pH of 4

• Baking Soda: pH of 9

• Drain Cleaner: pH of 14

The pH of vinegar is 2.5.  Vinegar is a _____________.

• strong acid

• strong base

• weak base

• weak acid

Litmus paper can be used to determine the _______ of a substance

• relative volume

• relative pH

• temperature

• chemical formula

You test a solution with pH paper, and the paper turns blue. The solution is ______.

• neutral

• an acid

• a base

• an acid & a base

True or false: a neutral solution has equal amounts of H⁺ and OH^-.

• True

• False

Is the following compound an acid or a base?

HCl

• Acid

• Base

What does pH measure?

• the amount of hydrogen (H⁺) ions

• the amount of hydroxide (OH^-) ions

• amount of water

• all of the above

When dissolved in water, bases produce:

• acids

• salts

• hydrogen ions

• hydroxide ions

What is the pH of water?

• 0

• 4

• 7

• 14