Ch. 4: Solutions, Acids and Bases
A Solution is a Type of Mixture
The Amount of Solute that
Dissolves can Vary
Solutions can be Acidic, Basic, or
NeutralTerms
100 100 100 100
200 200 200 200
300 300 300 300
400 400 400 400
500 500 500 500
Is the sand and water considered a mixture or a
solution?
Mixture—not the same throughtout. Parts can be be physically separated
b/c they are not chemically changed.
A ___________ is a substance that is dissolved to make a solution.
Solute
When substances in a solution are in the same physical state (solid, liquid, gas), which is the solvent?
The solvent is the substance that is present in the
greatest amount. Given that information...what would the
solvent be for the air we breathe? NITROGEN!
In a suspension, the particles are __________ than those found
in a solution.
Larger—instead of dissolving, these particles turn the
liquid cloudy.
Will the boiling point increase or decrease if we add more
solute to a solution?
Increase.
The amount of solute dissolved in a solvent at a given
temperature is known as...
Concentration
Sometimes a solution contains more dissolved solute than is normally possible. What is this
known as?
Supersaturated
________ are insoluble (will not dissolve) in water.
Oils
An increase in temperature for a solid will ___________ its
solubility.
An increase in temperature for a gas will ___________ its solubility.
Increase; decrease.
**TWO PART QUESTION
Because water is _________ and oil is ______________, their
molecules are not attracted to each other.
Polar; Nonpolar
Which of the following is NOT a proper way to test if something is an acid?
A.seeing if it reacts with a metalB.placing a few drops of solution on a
compound that contains carbonateC.Tasting it
D.Using litmus paper
C.—I’m really hoping everyone got this correct
Please name at least TWO examplesof common household bases.
Drain cleaner, soap, ammonia, alkaseltzers, baking soda,
detergent, acetone (high levels)
True or False. Numbers below 7 on the pH scale indicate basic
solutions.
False—it would indicate an acidic solution
Please explain the concept of neutralization and provide a
real-life example of this.
Neutralization: a chemical reaction in which an acid reacts with a base to
form salt. A common example occurs when you swallow an antacid tablet to
relieve an upset stomach.
Acids ________ protons and bases _________ protons.
Donate; accept
Neutral
A __________ substance is neither an acid or a base.
What is a solution that has a low concentration of
solute.
Dilute
___________ is the amount of solute that dissolves in a
certain amount of a solvent at a given temperature and
pressure to provide a saturated solution.
Solubility
What is known as the concentration of hydrogen
ions in a solution (also measurement of the acidity)
pH
Please give me an example of something with a pH level of 6.5 (remember, this is pretty close to
being neutral!)
Milk
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