RE-Take QUIZ Acids/Bases

What is the pH of water?

• 7.0

• 0.0

• 1.0

• 14.0

Answer explanation

Pure water is perfectly neutral, with a pH of 7.

Bases are located where on the pH scale?

• any number can be a base
• below 7
• above 7
• number 7 is a base

What color does litmus paper turn in the presence of an acid?

• blue
• black
• green
• red

A substance that is a 10 on the pH scale would be a(n) ____.

• acid
• neutral
• base
• indicator

At what location on the pH scale can you find acids?

• number 7 on the pH scale is acidic

• below 7

• above 7

• you can find acids all throughout the scale

Which are characteristics of ACIDS?

• taste sour

• corrosive to metals

• we can eat weak acids safely

• pH 0-7

• turns litmus paper blue

The pH scale is a range from:

• 1-7

• 0-14

• 1-5

• 1-14

Which is a characteristic of a BASE? Select all that apply.

• tastes sour

• tastes bitter

• feels slippery

• turn litmus paper blue

• pH 0-7

In a ____ reaction, an acid and a base produce a salt and a water. 

• concentrated
• decomposition
• dilute
• neutralization

Complete the following neutralization reaction:

HNO₃ + Ca(OH)₂ -->

• Ca(NO₃)₂ + H₂O

• Ca +H₂O

• Ca(NO₃)₂ + H₂

• Ca(NO₃)₂ + H₂O + CO₂