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WorksheetsB 4 Solutions
Total questions: 30
Worksheet time: 15mins
Which is a characteristic property of acids?
They do not react with metals.
They turn blue litmus paper red.
They turn red litmus paper blue.
Neutralization is a reaction between a(n)
Acid and a metal
Acid and a base
Salt and water
In water, bases form
Hydroxide ions
Hydrogen ions
Oxide ions
Acids are described as corrosive because they
Taste bitter
“Eat away” at other materials
Turn litmus blue
Normal rainfall is slightly acidic, which means its pH must be
Between 7 and 9
Between 5 and 7
Less than 2
What does a neutralization reaction produce?
Water and a salt
Acids
Bases
The pH scale measures
The strength of an acid
The strength of hydrogen ions
The potential for hydrogen ions
In a water solution, how do acids differ from bases?
Acids form salts, but bases do not.
Acids turn litmus blue, while bases turn litmus red.
Acids form hydrogen ions (H+), while bases form hydroxide ions (OH-).
You can find the pH of a substance by using
A thermometer
A conductivity test
Litmus indicator
Which is a likely use for a base?
As a vitamin in your food
Making soaps and detergents
Etching metals for printing
What color would litmus turn in a solution of vinegar?
Red because it has a low pH
Blue because it has a low pH
Red because it has a high pH
Blue because it has a high pH
Which is an accurate statement about soap compared to drain cleaner?
Soap is a base and drain cleaner is an acid
Soap is an acid and drain cleaner is a base
Soap is a weaker base than drain cleaner
Drain cleaner is a stronger acid than soap
What would happen if you mix lemon juice with a solution of baking soda?
An explosion
Neutralization
Nothing
An element is a pure substance in which there are how many kinds of atoms?
one
two
three
four
How do elements join to form compounds?
Randomly
In a specific mass ratio
In a ratio of 1 to 8
As the scientist plans it
What kind of pure substance forms when two elements chemically combine?
An element
A compound
A mixture
A solution
In which of the following are particles of two or more substances evenly mixed so they appear to be a single substance?
A compound
A mixture
A solution
An element
If a spoonful of salt is mixed in a glass of water, what is the water called?
A solute
A solution
A solvent
An element
Soluble substances can dissolve in certain solvents.
True
False
Insoluble substances can dissolve in all solvents.
True
False
Most substances are soluble in water, which is called the “universal solvent.”
True
False
Solubility is a measure of how well a solute can dissolve in a given solvent at a given temperature.
True
False
A highly concentrated Kool-Aid drink will have less powder than a Kool-Aid drink with a low concentration.
True
False
The relationship between solubility and concentration are
Directly related as solubility increases so does concentration
Indirectly related as solubility increases concentration decreases
The two are not related
What is concentration?
the ratio of solute to solvent
a way of determining the concentration of an acid or base
a measure of how easily a solute dissolves in solvent
amount of solute dissolved in solvent
What is solubility?
the ratio of solute to solvent
a way of determining the concentration of an acid or base
a measure of how easily a solute dissolves in solvent
amount of solute dissolved in solvent
What is saturation?
the ratio of solute to solvent
a way of determining the concentration of an acid or base
a measure of how easily a solute dissolves in solvent
amount of solute dissolved in solvent
What is titration?
the ratio of solute to solvent
a way of determining the concentration of an acid or base
a measure of how easily a solute dissolves in solvent
amount of solute dissolved in solvent
Taku mixed some water and juice crystals to make a fruit drink.
The solute is
water
juice crystals
fruit drink
Taku mixed some water and juice crystals to make a fruit drink.
The solution is
water
juice crystals
fruit drink
