Acids, Bases and pH

How do acidic solutions taste?

• Delicious

• Sweet

• Bitter

• Sour

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

• Acid

• Alkaline

• Base

• Buffer

A(n) _______ is a substance with a pH greater than 7.

• Base

• Acid

• Buffer

• Water

Which solution releases H+ in solution?

• Base

• Acid

• Buffer

• Water

This substance releases OH- into solution

• Acid

• Base

• Neutral

Lemon juice is an example of  __________

• base

• acid

• neutral substance

What color does acid turn litmus paper?

• It turns litmus paper purple.

• It turns red litmus paper blue.

• It turns blue litmus paper blue.

• It turns blue litmus paper red.

What are properties of a base?

• Slippery, bitter, does not react with metals, pH above 7.

• Slippery, bitter, reacts with metals, pH below 7.

• Sour, reacts with metals, pH below 7

• Sour, reacts with metals, pH above 7.

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 statement is true when acids and bases are mixed together?

• acids become stronger

• bases become stronger

• there is no change

• they neutralize each other

Tags

NGSS.MS-PS1-2