COMMUNITY CHEMISTRY
FINAL EXAM REVIEW
2011.GUGS
1
FINAL EXAM REVIEW TOPICS
1.
2.
3.
4.
5.
6.
7.
8.
9.
LAB SAFETY
SCIENTIFIC METHOD
METRICS
DENSITY
WATER & THE HYDROLOGIC CYCLE
ELEMENTS & USING THE PERIODIC TABLE
NAMING IONIC COMPOUNDS
PROPERTIES OF IONIC VS. MOLECULAR COMPOUNDS
SOLUTIONS & SOLUBILITY /POLAR VS. NON POLAR
MOLECULES
10. pH
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PRACTICE QUESTIONS
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LAB SAFETY: procedures & equipment
List 3 types of safety apparel & explain why they
are used:
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LAB SAFETY: procedures & equipment
List 3 types of safety apparel & explain why they
are used:
1. Goggles: protect eyes
2. Aprons: protect clothing
3. Gloves: protect hands
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LAB SAFETY: procedures & equipment
List 3 safety RULES & explain why they are
enforced:
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LAB SAFETY: procedures & equipment
List 3 safety RULES & explain why they are
enforced: possible answers
1. Tie back long hair: won’t catch fire.
2. Cover feet & legs: to protect from chemical
splashing/spills & broken glass.
3. Know the procedure: to prevent unsafe errors.
4. Remove dangling jewelry: can get caught on
things.
5. Dispose of chemical wastes as directed: some
chemicals can be pollutants.
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LAB SAFETY: EPA, OSHA & MSDS
What is the EPA & what is it’s purpose?
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LAB SAFETY: EPA, OSHA & MSDS
What is the EPA & what is it’s purpose?
EPA stands for Environmental Protection
Agency.
It is a U. S. government agency protects
human health and the environment
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LAB SAFETY: EPA, OSHA & MSDS
What is OSHA & what is it’s purpose?
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LAB SAFETY: EPA, OSHA & MSDS
What is OSHA & what is it’s purpose?
OSHA is the Occupational Health and
Safety Administration.
Its mission is to prevent work-related
injuries, illnesses, and occupational
fatality by issuing and enforcing
standards for workplace safety and
health.
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LAB SAFETY: EPA, OSHA & MSDS
WHAT DO THE LETTERS MSDS MEAN?
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LAB SAFETY: EPA, OSHA & MSDS
WHAT DO THE LETTERS MSDS MEAN?
MSDS stands for material safety data
sheet .
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LAB SAFETY: EPA, OSHA & MSDS
WHAT IS THE PURPOSE OF MSDS?
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LAB SAFETY: EPA, OSHA & MSDS
WHAT IS THE PURPOSE OF MSDS?
Material safety data sheet (MSDS) is a
form with data regarding the properties
of a particular substance. An important
component of handling or working with
a substance in a safe manner.
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LAB SAFETY: EPA, OSHA & MSDS
WHAT IS LD 50?
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LAB SAFETY: EPA, OSHA & MSDS
WHAT IS LD 50?
The LD50 is the dose that kills half (50%) of
the animals tested (LD = "lethal dose").
The animals are usually rats or mice,
although rabbits, guinea pigs, hamsters,
and so on are sometimes used.
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LAB SAFETY: EPA, OSHA & MSDS
Using an actual MSDS, provide the
following information:
1. Name of substance: _____________
2. Chemical formula: _______________
3. Boiling Point: ___________________
4. LD-50: _________________________
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Scientific Method
List the steps in the Scientific Method:
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Scientific Method
List the steps in the Scientific Method:
1. State the problem (with variables).
2. Form hypothesis.
3. Develop an experimental design that has a
control.
4. Gather data (perform experiment).
5. Analyze data & FORM CONCLUSIONS.
6. Evaluate the validity of the experiment.
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Scientific Method
WHAT IS THE EXPERIMENTAL CONTROL?
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Scientific Method
WHAT IS THE EXPERIMENTAL CONTROL?
A sample in which a factor whose effect is being
estimated is absent or is held constant, in
order to provide a comparison.
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Scientific Method
COMPARE THE DEPENDENT & INDEPENDENT
VARIABLES.
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Scientific Method
COMPARE THE DEPENDENT & INDEPENDENT
VARIABLES.
The independent variable is the variable being
manipulated/changed.
The dependent variable is what you measure in the
experiment and what is affected during the
experiment.
The dependent variable responds to the
independent variable.
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Scientific Method
Choose the arrow on the graduated cylinder to
show where the volume reading should be
correctly read.
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Scientific Method
Choose the arrow on the graduated cylinder to
show where the volume reading should be
correctly read.
***************
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THE METRIC SYSTEM
COMPLETE THE FOLLOWING TABLE.
Measurement
Metric Unit
1. Length
2. Mass
3. Volume
4. Time
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THE METRIC SYSTEM
COMPLETE THE FOLLOWING TABLE.
Measurement
Metric Unit
1.
2.
3.
4.
M-meter
g-gram
L-liter
s-seconds
Length
Mass
Volume
Time
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THE METRIC SYSTEM
COMPLETE THE FOLLOWING TABLE.
Prefix
1.
2.
3.
4.
Value (decimal/fraction)
Milli
Kilo
Deci
Centi
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THE METRIC SYSTEM
COMPLETE THE FOLLOWING TABLE.
Prefix
1.
2.
3.
4.
Milli
Kilo
Deci
Centi
Value (decimal/fraction)
1/1000 or 0.001
1000
1/10 or 0.1
1/100 or 0.01
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DENSITY
STATE THE FORMULA FOR DENSITY.
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DENSITY
STATE THE FORMULA FOR DENSITY.
Density is mass divided by
volume:
D = m/V
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DENSITY
Calculate the density of an object
that has a mass of 7.0 g and a
volume of 3.5 mL.
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DENSITY
Calculate the density of an object
that has a mass of 7.0 g and a
volume of 3.5 mL.
D=m/V
D = 7.0 g / 3.5 mL
D = 2 g / mL
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DENSITY
WHICH IS MORE DENSE THAN WATER?
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DENSITY
WHICH IS MORE DENSE THAN WATER?
Soda Can Sinks:
MORE DENSE
THAN WATER!
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ELEMENTS & USING THE PERIODIC TABLE
There are approximately
elements.
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ELEMENTS & USING THE PERIODIC TABLE
There are approximately 114
elements.
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ELEMENTS & USING THE PERIODIC TABLE
The 3 major types of elements are:
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ELEMENTS & USING THE PERIODIC TABLE
The 3 major types of elements are:
Metal, nonmetals, & metalloids.
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ELEMENTS & USING THE PERIODIC TABLE
List 3 properties of metals.
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ELEMENTS & USING THE PERIODIC TABLE
List 3 properties of metals.
1. Ductile (can be made into wire)
2. Malleable (can be shaped)
3. Good heat & electricity
conductors
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ELEMENTS & USING THE PERIODIC TABLE
What does the
number
35 represent?
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ELEMENTS & USING THE PERIODIC TABLE
What does the
number
35 represent?
Atomic number
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ELEMENTS & USING THE PERIODIC TABLE
What do the
letters Br
represent?
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ELEMENTS & USING THE PERIODIC TABLE
What do the
letters Br
represent?
The chemical
symbol of the
element.
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ELEMENTS & USING THE PERIODIC TABLE
What does the
number
79.90 represent?
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ELEMENTS & USING THE PERIODIC TABLE
What does the
number
79.90 represent?
Atomic mass
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ELEMENTS & USING THE PERIODIC TABLE
In the periodic table, families are arranged
in ____________.
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ELEMENTS & USING THE PERIODIC TABLE
In the periodic table, families are arranged
in vertical columns.
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ELEMENTS & USING THE PERIODIC TABLE
In the periodic table, periods are arranged
in
.
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ELEMENTS & USING THE PERIODIC TABLE
In the periodic table, periods are
arranged in horizontal rows.
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ELEMENTS & USING THE PERIODIC TABLE
In the periodic table, there are
periods.
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ELEMENTS & USING THE PERIODIC TABLE
In the periodic table, there are
7 periods.
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ELEMENTS & USING THE PERIODIC TABLE
In the periodic table, there are
families.
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ELEMENTS & USING THE PERIODIC TABLE
In the periodic table, there are
18 families.
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ELEMENTS & USING THE PERIODIC TABLE
The chemical properties of an element
relate most closely to the element’s
.
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ELEMENTS & USING THE PERIODIC TABLE
The chemical properties of an element
relate most closely to the element’s
electronic structure.
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ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Group
Family Name
1
2
17
18
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ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Group
Family Name
1
2
17
18
Alkali metals
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ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Group
Family Name
1
2
17
18
Alkali metals
Alkaline earth metals
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ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Group
Family Name
1
2
17
18
Alkali metals
Alkaline earth metals
Halogens
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ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Group
Family Name
1
2
17
18
Alkali metals
Alkaline earth metals
Halogens
Noble gases
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ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Element
Family Name
Li
Ba
I
Ne
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ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Element
Family Name
Li
Ba
I
Ne
Alkali metals
Alkaline earth metals
Halogens
Noble gases
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ELEMENTS & USING THE PERIODIC TABLE
An element’s identity is based on it’s
________.
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ELEMENTS & USING THE PERIODIC TABLE
An element’s identity is based on it’s
atomic number.
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ELEMENTS & USING THE PERIODIC TABLE
Identify the element which has an
atomic number of 6.
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ELEMENTS & USING THE PERIODIC TABLE
Identify the element which has an
atomic number of 6.
Carbon.
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ELEMENTS & USING THE PERIODIC TABLE
Identify the element which has an
atomic number of 16.
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ELEMENTS & USING THE PERIODIC TABLE
Identify the element which has an
atomic number of 16.
Sulfur.
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ELEMENTS & USING THE PERIODIC TABLE
Identify the element that has the
symbol Fe.
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ELEMENTS & USING THE PERIODIC TABLE
Identify the element that has the
symbol Fe.
Iron.
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ELEMENTS & USING THE PERIODIC TABLE
Identify the element that has the
symbol K.
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ELEMENTS & USING THE PERIODIC TABLE
Identify the element that has the
symbol K.
Potassium.
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ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Isotope Atomic Mass
#
#
L
M
# of
protons
34
#
# of
charge
of
electrons
neutrons
30
80
35
2011.GUGS
36
-1
76
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Isotope Atomic Mass
#
#
L
M
34
# of
protons
34
80
35
2011.GUGS
#
# of
charge
of
electrons
neutrons
30
36
-1
77
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Isotope Atomic Mass
#
#
L
M
34
34 +
30 =
64
80
# of
protons
34
35
2011.GUGS
#
# of
charge
of
electrons
neutrons
30
36
-1
78
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Isotope Atomic Mass
#
#
L
M
34
# of
protons
34 +
30 =
64
34
80
35
2011.GUGS
#
# of
charge
of
electrons
neutrons
30
36
3436 =
-2
-1
79
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Isotope Atomic Mass
#
#
# of
protons
L
34
34 +
30 =
64
34
M
35
80
35
2011.GUGS
#
# of
charge
of
electrons
neutrons
30
36
3436 =
-2
-1
80
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Isotope Atomic Mass
#
#
# of
protons
#
# of
charge
of
electrons
neutrons
L
34
34 +
30 =
64
34
30
M
35
80
35
80-35 =
45
2011.GUGS
36
3436 =
-2
-1
81
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Isotope Atomic Mass
#
#
# of
protons
L
34
34 +
30 =
64
34
M
35
80
35
2011.GUGS
#
# of
charge
of
electrons
neutrons
30
36
3436 =
-2
80-35 = 35 + 1 -1
45
= 36
82
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Atom
Metal or
Cation or
Nonmetal? Anion?
Gains or
loses
electrons?
# of
electrons
gained or
lost
Ion
formed
Sodium, Na
Na +
Sulfur, S
S 2-
Magnesium,
Mg
Aluminum,
Al
Mg 2+
Al 3+
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ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Atom
Sodium, Na
Metal or
Cation or
Nonmetal? Anion?
Metal
Cation
Gains or
loses
electrons?
Loses
# of
electrons
gained or
lost
Ion
formed
1 lost
Na +
Sulfur, S
S 2-
Magnesium,
Mg
Aluminum,
Al
Mg 2+
Al 3+
2011.GUGS
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ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Atom
Metal or
Nonmetal?
Cation or
Anion?
Gains or
loses
electrons?
# of
electrons
gained or
lost
Ion
formed
Sodium, Na
Metal
Cation
Loses
1 lost
Na +
Sulfur, S
Nonmetal
Anion
Gains
2 gained
S 2-
Mg 2+
Magnesium,
Mg
Aluminum,
Al
Al 3+
2011.GUGS
85
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Atom
Metal or
Nonmetal?
Cation or
Anion?
Gains or
loses
electrons?
# of
electrons
gained or
lost
Ion
formed
Sodium, Na
Metal
Cation
Loses
1 lost
Na +
Sulfur, S
Nonmetal
Anion
Gains
2 gained
S 2-
Magnesium,
Mg
Aluminum,
Al
Metal
Cation
Loses
2 lost
Mg 2+
Al 3+
2011.GUGS
86
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Atom
Metal or
Nonmetal?
Cation or
Anion?
Gains or
loses
electrons?
# of
electrons
gained or
lost
Ion
formed
Sodium, Na
Metal
Cation
Loses
1 lost
Na +
Sulfur, S
Nonmetal
Anion
Gains
2 gained
S 2-
Magnesium,
Mg
Aluminum,
Al
Metal
Cation
Loses
2 lost
Mg 2+
Metal
Cation
Loses
3 lost
Al 3+
2011.GUGS
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FORMULAS & NAMES OF IONIC COMPOUNDS
Complete the table:
Element
Cation Element
formula
Calcium
Nitrogen
Sodium
Sulfur
Aluminu
m
Fluorine
Anion
formula
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Compound
formula
Name
88
FORMULAS & NAMES OF IONIC COMPOUNDS
Complete the table:
Element
Calcium
Cation Element
formula
Ca2+
Anion
formula
N3-
Nitrogen
Sodium
Sulfur
Aluminu
m
Fluorine
2011.GUGS
Compound
formula
Ca3N2
Name
Calcium
nitride
89
FORMULAS & NAMES OF IONIC COMPOUNDS
Complete the table:
Element
Cation Element
formula
Anion
formula
Compound
formula
Name
Calcium
Ca2+
Nitrogen
N3-
Ca3N2
Calcium
nitride
Sodium
Na+
Sulfur
S-
Na2S
Sodium
sulfide
Aluminu
m
Fluorine
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FORMULAS & NAMES OF IONIC COMPOUNDS
Complete the table:
Element
Cation Element
formula
Anion
formula
Cmpd
Name
formula
Calcium
Ca2+
Nitrogen
N3-
Ca3N2
Calcium
nitride
Sodium
Na+
Sulfur
S-
Na2S
Sodium
sulfide
Aluminu
m
Al3+
Fluorine
F-
AlF3
Aluminum
fluoride
2011.GUGS
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FORMULAS & NAMES OF IONIC COMPOUNDS
Write the formula for magnesium hydroxide:
2011.GUGS
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FORMULAS & NAMES OF IONIC COMPOUNDS
Write the formula for magnesium hydroxide:
Mg(OH)2
2011.GUGS
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FORMULAS & NAMES OF IONIC COMPOUNDS
How many oxygen atoms are in the chemical
formula Ba3(PO4)2?
2011.GUGS
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FORMULAS & NAMES OF IONIC COMPOUNDS
Write the formula for barium phosphate:
Ba3(PO4)2
2011.GUGS
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FORMULAS & NAMES OF IONIC COMPOUNDS
How many oxygen atoms are in the chemical
formula Ba3(PO4)2?
2X4=8
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WATER & THE HYDROLOGIC CYCLE
What is the difference between direct and
indirect water use?
2011.GUGS
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WATER & THE HYDROLOGIC CYCLE
What is the difference between direct and indirect
water use?
Direct water use is when you turn on a tap and
water comes out– for example: Drinking a glass of
water/cooking with water, showering.
Indirect water use is when you use a product or
service that required water to be used for its
production, or water use that you aren't readily
aware of, for example: water used in the
production of electricity.
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WATER & THE HYDROLOGIC CYCLE
List 4 ways you can conserve water:
2011.GUGS
99
WATER & THE HYDROLOGIC CYCLE
List 4 ways you can conserve water:
2011.GUGS
100
WATER & THE HYDROLOGIC CYCLE
List & describe the processes (steps) in the
hydrologic cycle.
2011.GUGS
101
WATER & THE HYDROLOGIC CYCLE
List the processes (steps) in the hydrologic cycle.
1. Condensation: when warm air collides with cold air and
droplets form.
2. Precipitation: droplets that after being condensed begin
to fall to the earth in the form of rain, sleet, hail, glaze, or
snow.
3. Erosion: the movement of soil by wind or water.
4. Melting: when a solid changes into a liquid.
5. Percolation: the movement of water through the soil.
6. Evaporation: The process of liquid water becoming
vapor.
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The Hydrologic
Cycle:
Insert the
following terms
In the diagram:
•Evaporation
•Respiration
•Transpiration
•Precipitation
•Runoff
•Condensation
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The Hydrologic
Cycle:
Insert the
following terms
In the diagram:
•Evaporation
•Respiration
•Transpiration
•Precipitation
•Runoff
•Condensation
2011.GUGS
104
WATER & THE HYDROLOGIC CYCLE
Huge underground storehouses of
water made rock, sand, or gravel
are known as ____________.
2011.GUGS
105
WATER & THE HYDROLOGIC CYCLE
Huge underground storehouses of
water made rock, sand, or gravel
are known as aquifers.
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106
SOLUTIONS & SOLUBILITY
Define:
1. Solute:
2. Solvent:
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107
SOLUTIONS & SOLUBILITY
Define:
1. Solute: A substance dissolved in
another substance, usually the
component of a solution present in
the lesser amount.
2. Solvent:
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108
SOLUTIONS & SOLUBILITY
Define:
1. Solute: A substance dissolved in another
substance, usually the component of a
solution present in the lesser amount.
2. Solvent: a substance that dissolves
another to form a solution; usually
the component of a solution
present in the greater amount.
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SOLUTIONS & SOLUBILITY
Define the following:
1. Unsaturated
2. Saturated
3. Supersaturated
4. Electrolyte
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110
SOLUTIONS & SOLUBILITY
Define the following:
1. Unsaturated: a solution that has
LESS than the maximum amount of
solute.
2. Saturated
3. Supersaturated
4. Electrolyte
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111
SOLUTIONS & SOLUBILITY
Define the following:
1.
Unsaturated: a solution that has LESS than
the maximum amount of solute.
2. Saturated: a solution that has
exactly the maximum amount of
solute.
3.
4.
Supersaturated:
Electrolyte:
2011.GUGS
112
SOLUTIONS & SOLUBILITY
Define the following:
1. Unsaturated: a solution that has LESS than
the maximum amount of solute.
2. Saturated: a solution that has exactly the
maximum amount of solute.
3. Supersaturated: a solution that
has MORE than the maximum
amount of solute.
4. Electrolyte:
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113
SOLUTIONS & SOLUBILITY
Define the following:
1.
2.
3.
Unsaturated: a solution that has LESS than the
maximum amount of solute.
Saturated: a solution that has exactly the maximum
amount of solute.
Supersaturated: a solution that has MORE than the
maximum amount of solute.
4. Electrolyte: material containing free ions
that can conduct an electrical current.
Most electrolytes consist of ions in
solution, and they are referred to as ionic
solutions.
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114
SOLUTIONS & SOLUBILITY
If the temperature of a solution with a
gaseous solute increases, the
solubility ______________.
2011.GUGS
115
SOLUTIONS & SOLUBILITY
If the temperature of a solution with a
gaseous solute increases, the
solubility decreases.
2011.GUGS
116
SOLUTIONS & SOLUBILITY
If the temperature of a solution with a
solids solute increases, the solubility
________________.
2011.GUGS
117
SOLUTIONS & SOLUBILITY
If the temperature of a solution with a
solids solute increases, the solubility
increases.
2011.GUGS
118
SOLUTIONS & SOLUBILITY
Explain why water is known as the
universal solvent.
2011.GUGS
119
SOLUTIONS & SOLUBILITY
Explain why water is known as the
universal solvent.
Solutes for the most part are able to
dissolve in water with the exception of
some solutes like oil.
2011.GUGS
120
SOLUTIONS & SOLUBILITY
Explain what is meant by a polar molecule.
Give an example.
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121
SOLUTIONS & SOLUBILITY
Explain what is meant by a polar molecule.
Give an example.
A molecule that is positively charged on
one end & negatively charged on the
other end.
Water is a polar molecule.
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122
SOLUTIONS & SOLUBILITY
Explain why water and oil do not mix.
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123
SOLUTIONS & SOLUBILITY
Explain why water and oil do not mix.
Water is polar & oil is non polar.
2011.GUGS
124
SOLUTIONS & SOLUBILITY
Explain how water dissolves ionic
compounds.
2011.GUGS
125
SOLUTIONS & SOLUBILITY
Explain how water dissolves ionic
compounds.
Polar water molecules attract ions &
pull the ionic compound apart.
2011.GUGS
126
SOLUTIONS & SOLUBILITY
COMPLETE THE TABLE:
SOLUTE
1
SOLUBLE IN SOLUBLE IN
WATER?
MINERAL
OIL?
YES
NO
2
NO
YES
3
YES
NO
2011.GUGS
POLAR OR
NON
POLAR?
127
SOLUTIONS & SOLUBILITY
COMPLETE THE TABLE:
SOLUTE
1
SOLUBLE IN SOLUBLE IN
WATER?
MINERAL
OIL?
YES
NO
POLAR OR
NON
POLAR?
POLAR
2
NO
YES
NON POLAR
3
YES
NO
POLAR
2011.GUGS
128
SOLUTIONS & SOLUBILITY: PROPERTIES OF SOLIDS
COMPLETE THE TABLE:
SOLUTE
DISSOLVES
IN WATER?
CONDUCTS
IONIC OR
ELECTRICITY MOLECULAR
IN WATER?
SOLUTE?
NO
1
YES
2
YES
YES
3
NO
NO
2011.GUGS
129
SOLUTIONS & SOLUBILITY: PROPERTIES OF SOLIDS
COMPLETE THE TABLE:
SOLUTE
DISSOLVES
IN WATER?
CONDUCTS
IONIC OR
ELECTRICITY MOLECULAR
IN WATER?
SOLUTE?
NO
MOLECULAR
1
YES
2
YES
YES
3
NO
NO
2011.GUGS
130
SOLUTIONS & SOLUBILITY: PROPERTIES OF SOLIDS
COMPLETE THE TABLE:
SOLUTE
DISSOLVES
IN WATER?
CONDUCTS
IONIC OR
ELECTRICITY MOLECULAR
IN WATER?
SOLUTE?
NO
MOLECULAR
1
YES
2
YES
YES
3
NO
NO
2011.GUGS
IONIC
131
SOLUTIONS & SOLUBILITY: PROPERTIES OF SOLIDS
COMPLETE THE TABLE:
SOLUTE
DISSOLVES
IN WATER?
CONDUCTS
IONIC OR
ELECTRICITY MOLECULAR
IN WATER?
SOLUTE?
NO
MOLECULAR
1
YES
2
YES
YES
IONIC
3
NO
NO
MOLECULAR
2011.GUGS
132
SOLUTIONS & SOLUBILITY
Using the graph,
what is the solubility
of
potassium chloride
(KCl) at 80oC?
2011.GUGS
133
SOLUTIONS & SOLUBILITY
Using the graph,
what is the solubility
of
potassium chloride
(KCl) at 80oC?
50 grams
2011.GUGS
134
SOLUTIONS & SOLUBILITY
Using the graph,
what is the solubility
of
Ammonia (NH3) at
20oC?
2011.GUGS
135
SOLUTIONS & SOLUBILITY
Using the graph,
what is the solubility
of
Ammonia (NH3) at
20oC?
52 grams
2011.GUGS
136
SOLUTIONS & SOLUBILITY
Using the graph, what
temperature is need
to dissolve 10 grams
of potassium
chlorate, KClO3 in
100 grams of water?
2011.GUGS
137
SOLUTIONS & SOLUBILITY
Using the graph, what
temperature is need
to dissolve 10 grams
of potassium
chlorate, KClO3 in
100 grams of water?
20 oC
2011.GUGS
138
pH
Complete the table.
pH
Acidic, basic, or neutral?
1
5
7
9
13
2011.GUGS
139
pH
Complete the table.
pH
Acidic, basic, or neutral?
1
acidic
5
acidic
7
neutral
9
basic
13
basic
2011.GUGS
140
pH
An example of a substance that is basic
is
.
2011.GUGS
141
pH
An example of a substance that is
acidic is
.
2011.GUGS
142
pH
An example of a substance that is
neutral is
.
2011.GUGS
143