Acids and Bases

What is an Arrhenius acid?

• A substance that produces H+ in water.

• A substance that produces OH- in water.

Answer explanation

An Arrhenius acid has a H in the beginning of its formula and produces H+ in water.

Tags

HS-PS1-B

What is an Arrhenius base?

• A substance that produces H+ ion in water

• A substance that produces OH- ion in water.

• A substance that produces OH+ ion in water

• A substance that produces H- ion in water.

Answer explanation

An Arrhenius base has a OH at the end of its formula and produces OH- in water.

Tags

HS-PS1-B

A student tests an unknown aqueous solution and finds it conducts electricity and turns litmus paper red. What can the student infer?

• The solution contains an acid.

• The solution contains a base.

• The solutions is neutral.

Answer explanation

Acidic solutions conduct electricity and turn litmus paper red.

Tags

HS-PS1-B

A student tests an unknown aqueous solution and finds it conducts electricity and turns litmus paper blue. What can the student infer?

• The solution contains an acid.

• The solution contains a base.

• The solutions is neutral.

Answer explanation

Basic solutions conduct electricity and turn litmus paper blue.

Tags

HS-PS1-B

​ (a)   conduct electricity and turn litmus paper red.

• Acids
• Bases
• Neutral solutions
• Salts

Answer explanation

Acidic solutions conduct electricity and turn litmus paper red.

Tags

hsps1b

HS-PS1-B

Label the acid, base, conjugate acid and conjugate base.

a

b

c

d

acid

base

conjugate base

conjugate acid

Tags

HS-PS1-B

Click on the acid.

Tags

HS-PS1-B

Click on the base.

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HS-PS1-B

Click on the conjugate base.

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HS-PS1-B

Click on the conjugate acid.

Tags

HS-PS1-B