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WorksheetsAcids/Bases/Solutions
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
Which of these substances is acidic?
a)
tap water
b)
lemon
c)
ammonia
d)
baking soda
2.
What is the most likely pH of a tube of toothpaste?
a)
3
b)
5
c)
7
d)
9
3.
How is a standard hydrogen atom different from a hydrogen ion?
a)
a hydrogen ion has an extra electron.
b)
a hydrogen ion is missing an electron.
c)
a hydrogen ion has an extra proton.
d)
a hydrogen ion is missing a proton.
4.
What might happen if you mixed a strong acid with an equally strong base?
a)
You would see an explosive chemical reaction.
b)
The acid would destroy the base.
c)
The base would destroy the acid.
d)
You'd wind up with a pH-neutral substance.
5.
An extremely strong base would have a pH of:
a)
1
b)
7
c)
9
d)
14
6.
What might happen if buffers did not exist within the human body?
a)
Our blood and other bodily fluids might become too acidic or basic.
b)
Our stomach acid would not be able to break down food.
c)
We would not be able to process glucose within our cells.
d)
We would not be able to inhale oxygen into our lungs.
7.
This piece of pH paper has been dipped into:
a)
An acid
b)
A base
c)
A pH-neutral substance
d)
A buffer
8.
Why do metals dissolve when you dip them in acid?
a)
The buffers in the metal are eaten away by the acid.
b)
The electrons in the metal are stripped away by hydrogen ions.
c)
The hydrogen ions in the acid react with the hydroxyl ions in the metal.
d)
The acid reacts with the basic metal to form carbon dioxide gas and salt.
9.
What might happen if acidi chemicals were emitted into the air by factories? Choose the best answer.
a)
The acid would destroy metallic elements in the air.
b)
The acid would be neutralized by bases within clouds.
c)
Acid rain might destroy ecosystems and farmland.
d)
Violent chemical reactions would take place within the atmosphere.
10.
Healthy environments for life have a pH closest to:
a)
1
b)
3
c)
7
d)
10
11.
Which of the following substances is basic?
a)
soda
b)
lemon juice
c)
soap
d)
vinegar
12.
What happens immediately after you dissolve acid in water?
a)
Positively charged hydrogen atoms are released.
b)
Hydronium ions are released.
c)
Negatively charged hydrogen atoms are released.
d)
Neutrally charged hydrogen atoms are released.
13.
Acids are caustic to the touch. In this context, what does "caustic" mean?
a)
stinging or burning
b)
pleasant
c)
sarcastic
d)
gentle
14.
A hydronium ion is like a _____molecule with an extra hydrogen atom.
a)
Acid
b)
Base
c)
Water
d)
Vinegar
15.
What substance would do the best job of cleaning pots and pans?
a)
A substance with a pH of 7
b)
A substance with a pH of 2
c)
A substance with a pH of 4
d)
A substance with a pH of 8
16.
What is a property of bases?
a)
Slippery touch
b)
Sour taste
c)
Ability to dissolve metal
d)
Ability to form hydronium ions
17.
How do acidic solutions taste?
a)
Delicious
b)
Sweet
c)
Bitter
d)
Sour
18.
Which of the following substances is basic?
a)
Apple juice
b)
Ginger ale
c)
Baking soda
d)
Distilled water
19.
pH stands for:
a)
Potency of hydrogen
b)
Plurality of hydrogen
c)
Potential of hydrogen
d)
Pleurisy of hydrogen
20.
What do acids and bases have in common?
a)
They both eat away at metal.
b)
They can both conduct electricity.
c)
They both have a sour taste.
d)
They both form positively charged ions when dissolved in water.
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