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WorksheetsAcids, Bases & Solutions Practice
Total questions: 25
Worksheet time: 6hrs 15mins
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.
This piece of pH paper has been dipped into:
a)
An acid
b)
A base
c)
A pH-neutral substance
d)
A buffer
7.
Which of the following substances is basic?
a)
soda
b)
lemon juice
c)
soap
d)
vinegar
8.
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.
9.
Acids are caustic to the touch. In this context, what does "caustic" mean?
a)
stinging or burning
b)
pleasant
c)
sarcastic
d)
gentle
10.
A hydronium ion is like a _____molecule with an extra hydrogen atom.
a)
Acid
b)
Base
c)
Water
d)
Vinegar
11.
What is a property of bases?
a)
Slippery touch
b)
Sour taste
c)
Ability to dissolve metal
d)
Ability to form hydronium ions
12.
How do acidic solutions taste?
a)
Delicious
b)
Sweet
c)
Bitter
d)
Sour
13.
Which of the following substances is basic?
a)
Apple juice
b)
Ginger ale
c)
Baking soda
d)
Distilled water
14.
What property do all three of these common household substances have in common?
a)
they are all basic
b)
they taste sour
c)
they have a pH below 7
d)
they all turn litmus paper red
15.
When Sally tested an unknown substance, her red litmus paper turned blue but her blue litmus paper did not change color. What is the solution?
a)
Acid
b)
Base
c)
neutral
d)
world peace
16.
According to the pH scale, which of the following would be true?
a)
baking soda is a weak base while drain cleaner is a strong base
b)
lemon is a weaker acid than a banana
c)
tomato and soap are acidic
d)
vinegar is less acidic than an apple
17.
Which characteristics describe a base?
a)
sour, indicator turns red, pH less than 7, produces hydrogen ions (H+)
b)
bitter, slippery, indicator turns blue, pH greater than 7, produces hydroxide ions (OH-)
c)
neutral, pH of 7
d)
sour, indicator turns red, pH greater than 7
18.
Which characteristics describe an acid?
a)
sour, indicator turns red, pH less than 7, produces hydrogen ions (H+)
b)
bitter, slippery, indicator turns blue, pH greater than 7, produces hydroxide ions (OH-)
c)
neutral, pH of 7
d)
sour, indicator turns red, pH greater than 7
19.
An extremely strong acid would have a pH of...
a)
1
b)
7
c)
9
d)
14
20.
A weak acid would have a pH of...
a)
1
b)
7
c)
6
d)
14
21.
A weak base would have a pH of...
a)
8
b)
7
c)
6
d)
14
22.
A neutral substance would have pH of...
a)
8
b)
7
c)
6
d)
14
23.
Which statement is true?
a)
Acids start with H and bases end with OH
b)
Acids start with OH and bases end with H
c)
Acids end with H and bases start with OH
d)
Acids end with OH and bases start with H
24.
A strong acid:
a)
completely dissociates in water
b)
partly dissociates in water
c)
doesn't dissociate in water
d)
has a really high pH
25.
Indicator tests give you the following results:
-pH paper turns green
-Red litmus paper stays red
-Blue litmus stays blue
-With phenolphthalein the solution remains clear
What do you conclude?
-pH paper turns green
-Red litmus paper stays red
-Blue litmus stays blue
-With phenolphthalein the solution remains clear
What do you conclude?
a)
the solution is acidic
b)
the solution is basic
c)
the solution will explode
d)
the solution is neutral
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