Chapter 3 Chem Interactions

Which is a characteristic property of acids?

• They do not react with metals.

• They turn blue litmus paper red.

• They taste bitter.

Acids are described as corrosive because they

• “eat away” at other materials.

• feel slippery.

• turn litmus blue.

Neutralization is a reaction between a(n)

• acid and a metal.

• base and a salt.

• acid and a base.

Tags

NGSS.MS-PS1-5

Compared to the pH of saliva, the pH of stomach juices is

• More acidic.

• More basic.

• the same.

Normal rainfall is slightly acidic, which means its pH must be

• between 7 and 9.

• between 2 and 4.

• between 5 and 7.

Acids naturally present in food are safe to eat because they usually are

• weak.

• dilute.

• strong.

A(n) __________ is a compound that tastes sour and reacts with some metals.

• high

• neutral

• acid

A(n) ___________ is a compound that turns litmus blue and is often found in soaps and detergents.

• low

• base

• high

In a reaction of an acid with a base, the pH changes to a value that is closer to __________.

• acid

• neutral

• low

Because it will dissolve so many solutes, ___________ is sometimes called the universal solvent.

• corrosive

• ions

• water

Tags

NGSS.MS-ESS2-4