2011.GUGS 1
COMMUNITY CHEMISTRY
FINAL EXAM REVIEW
2011.GUGS 2
FINAL EXAM REVIEW TOPICS1. LAB SAFETY2. SCIENTIFIC METHOD3. METRICS4. DENSITY5. WATER & THE HYDROLOGIC CYCLE6. ELEMENTS & USING THE PERIODIC TABLE7. NAMING IONIC COMPOUNDS8. PROPERTIES OF IONIC VS. MOLECULAR COMPOUNDS9. SOLUTIONS & SOLUBILITY /POLAR VS. NON POLAR
MOLECULES10. pH
2011.GUGS 3
PRACTICE QUESTIONS
2011.GUGS 4
LAB SAFETY: procedures & equipmentList 3 types of safety apparel & explain why they
are used:
2011.GUGS 5
LAB SAFETY: procedures & equipmentList 3 types of safety apparel & explain why they
are used:1. Goggles: protect eyes2. Aprons: protect clothing3. Gloves: protect hands
2011.GUGS 6
LAB SAFETY: procedures & equipmentList 3 safety RULES & explain why they are
enforced:
2011.GUGS 7
LAB SAFETY: procedures & equipmentList 3 safety RULES & explain why they are
enforced: possible answers1. 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.
2011.GUGS 8
LAB SAFETY: EPA, OSHA & MSDSWhat is the EPA & what is it’s purpose?
2011.GUGS 9
LAB SAFETY: EPA, OSHA & MSDSWhat 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
2011.GUGS 10
LAB SAFETY: EPA, OSHA & MSDSWhat is OSHA & what is it’s purpose?
2011.GUGS 11
LAB SAFETY: EPA, OSHA & MSDSWhat 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.
2011.GUGS 12
LAB SAFETY: EPA, OSHA & MSDSWHAT DO THE LETTERS MSDS MEAN?
2011.GUGS 13
LAB SAFETY: EPA, OSHA & MSDSWHAT DO THE LETTERS MSDS MEAN?
MSDS stands for material safety data sheet .
2011.GUGS 14
LAB SAFETY: EPA, OSHA & MSDSWHAT IS THE PURPOSE OF MSDS?
2011.GUGS 15
LAB SAFETY: EPA, OSHA & MSDSWHAT 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.
2011.GUGS 16
LAB SAFETY: EPA, OSHA & MSDSWHAT IS LD 50?
2011.GUGS 17
LAB SAFETY: EPA, OSHA & MSDSWHAT 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.
2011.GUGS 18
LAB SAFETY: EPA, OSHA & MSDSUsing an actual MSDS, provide the
following information:1. Name of substance: _____________2. Chemical formula: _______________3. Boiling Point: ___________________4. LD-50: _________________________
2011.GUGS 19
Scientific MethodList the steps in the Scientific Method:
2011.GUGS 20
Scientific MethodList 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.
2011.GUGS 21
Scientific MethodWHAT IS THE EXPERIMENTAL CONTROL?
2011.GUGS 22
Scientific MethodWHAT 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.
2011.GUGS 23
Scientific MethodCOMPARE THE DEPENDENT & INDEPENDENT
VARIABLES.
2011.GUGS 24
Scientific MethodCOMPARE 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.
2011.GUGS 25
Scientific MethodChoose the arrow on the graduated cylinder to
show where the volume reading should be correctly read.
2011.GUGS 26
Scientific MethodChoose the arrow on the graduated cylinder to
show where the volume reading should be correctly read.
***************
2011.GUGS 27
THE METRIC SYSTEMCOMPLETE THE FOLLOWING TABLE.Measurement Metric Unit1. Length2. Mass3. Volume4. Time
2011.GUGS 28
THE METRIC SYSTEMCOMPLETE THE FOLLOWING TABLE.
Measurement Metric Unit1. Length M-meter2. Mass g-gram3. Volume L-liter4. Time s-seconds
2011.GUGS 29
THE METRIC SYSTEMCOMPLETE THE FOLLOWING TABLE.Prefix Value
(decimal/fraction)1. Milli2. Kilo3. Deci4. Centi
2011.GUGS 30
THE METRIC SYSTEMCOMPLETE THE FOLLOWING TABLE.Prefix Value
(decimal/fraction)1. Milli 1/1000 or 0.0012. Kilo 10003. Deci 1/10 or 0.14. Centi 1/100 or 0.01
2011.GUGS 31
DENSITYSTATE THE FORMULA FOR DENSITY.
2011.GUGS 32
DENSITYSTATE THE FORMULA FOR DENSITY.
Density is mass divided by volume:
D = m/V
2011.GUGS 33
DENSITYCalculate the density of an object
that has a mass of 7.0 g and a volume of 3.5 mL.
2011.GUGS 34
DENSITYCalculate the density of an object
that has a mass of 7.0 g and a volume of 3.5 mL.
D = m / VD = 7.0 g / 3.5 mLD = 2 g / mL
2011.GUGS 35
DENSITY
WHICH IS MORE DENSE THAN WATER?
2011.GUGS 36
DENSITYWHICH IS MORE DENSE THAN WATER?
Soda Can Sinks: MORE DENSE THAN WATER!
2011.GUGS 37
ELEMENTS & USING THE PERIODIC TABLE
There are approximately elements.
2011.GUGS 38
ELEMENTS & USING THE PERIODIC TABLE
There are approximately 114 elements.
2011.GUGS 39
ELEMENTS & USING THE PERIODIC TABLE
The 3 major types of elements are:
2011.GUGS 40
ELEMENTS & USING THE PERIODIC TABLE
The 3 major types of elements are:Metal, nonmetals, & metalloids.
2011.GUGS 41
ELEMENTS & USING THE PERIODIC TABLE
List 3 properties of metals.
2011.GUGS 42
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
2011.GUGS 43
ELEMENTS & USING THE PERIODIC TABLE
What does the number35 represent?
2011.GUGS 44
ELEMENTS & USING THE PERIODIC TABLE
What does the number35 represent?Atomic number
2011.GUGS 45
ELEMENTS & USING THE PERIODIC TABLE
What do theletters Brrepresent?
2011.GUGS 46
ELEMENTS & USING THE PERIODIC TABLE
What do theletters Brrepresent?The chemicalsymbol of theelement.
2011.GUGS 47
ELEMENTS & USING THE PERIODIC TABLE
What does the number79.90 represent?
2011.GUGS 48
ELEMENTS & USING THE PERIODIC TABLE
What does the number79.90 represent?Atomic mass
2011.GUGS 49
ELEMENTS & USING THE PERIODIC TABLE
In the periodic table, families are arranged in ____________.
2011.GUGS 50
ELEMENTS & USING THE PERIODIC TABLE
In the periodic table, families are arranged in vertical columns.
2011.GUGS 51
ELEMENTS & USING THE PERIODIC TABLE
In the periodic table, periods are arranged in .
2011.GUGS 52
ELEMENTS & USING THE PERIODIC TABLE
In the periodic table, periods are arranged in horizontal rows.
2011.GUGS 53
ELEMENTS & USING THE PERIODIC TABLE
In the periodic table, there are periods.
2011.GUGS 54
ELEMENTS & USING THE PERIODIC TABLE
In the periodic table, there are 7 periods.
2011.GUGS 55
ELEMENTS & USING THE PERIODIC TABLE
In the periodic table, there are families.
2011.GUGS 56
ELEMENTS & USING THE PERIODIC TABLE
In the periodic table, there are 18 families.
2011.GUGS 57
ELEMENTS & USING THE PERIODIC TABLE
The chemical properties of an element relate most closely to the element’s
.
2011.GUGS 58
ELEMENTS & USING THE PERIODIC TABLE
The chemical properties of an element relate most closely to the element’s
electronic structure.
2011.GUGS 59
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Group Family Name
12
1718
2011.GUGS 60
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Group Family Name
1 Alkali metals2
1718
2011.GUGS 61
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Group Family Name
1 Alkali metals2 Alkaline earth metals
1718
2011.GUGS 62
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Group Family Name
1 Alkali metals2 Alkaline earth metals
17 Halogens18
2011.GUGS 63
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Group Family Name
1 Alkali metals2 Alkaline earth metals
17 Halogens18 Noble gases
2011.GUGS 64
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Element Family Name
LiBaI
Ne
2011.GUGS 65
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:
Element Family Name
Li Alkali metalsBa Alkaline earth metalsI Halogens
Ne Noble gases
2011.GUGS 66
ELEMENTS & USING THE PERIODIC TABLE
An element’s identity is based on it’s ________.
2011.GUGS 67
ELEMENTS & USING THE PERIODIC TABLE
An element’s identity is based on it’s atomic number.
2011.GUGS 68
ELEMENTS & USING THE PERIODIC TABLE
Identify the element which has an atomic number of 6.
2011.GUGS 69
ELEMENTS & USING THE PERIODIC TABLE
Identify the element which has an atomic number of 6.
Carbon.
2011.GUGS 70
ELEMENTS & USING THE PERIODIC TABLE
Identify the element which has an atomic number of 16.
2011.GUGS 71
ELEMENTS & USING THE PERIODIC TABLE
Identify the element which has an atomic number of 16.
Sulfur.
2011.GUGS 72
ELEMENTS & USING THE PERIODIC TABLE
Identify the element that has the symbol Fe.
2011.GUGS 73
ELEMENTS & USING THE PERIODIC TABLE
Identify the element that has the symbol Fe.
Iron.
2011.GUGS 74
ELEMENTS & USING THE PERIODIC TABLE
Identify the element that has the symbol K.
2011.GUGS 75
ELEMENTS & USING THE PERIODIC TABLE
Identify the element that has the symbol K.
Potassium.
2011.GUGS 76
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:Isotope Atomic
#Mass
## of
protons# of
neutrons
# of electrons
charge
L 34 30 36M 80 35 -1
2011.GUGS 77
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:Isotope Atomic
#Mass
## of
protons# of
neutrons
# of electrons
charge
L 34 34 30 36M 80 35 -1
2011.GUGS 78
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:Isotope Atomic
#Mass
## of
protons# of
neutrons
# of electrons
charge
L 34 34 + 30 = 64
34 30 36
M 80 35 -1
2011.GUGS 79
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:Isotope Atomic
#Mass
## of
protons# of
neutrons
# of electrons
charge
L 34 34 + 30 = 64
34 30 36 34-36 =
-2M 80 35 -1
2011.GUGS 80
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:Isotope Atomic
#Mass
## of
protons# of
neutrons
# of electrons
charge
L 34 34 + 30 = 64
34 30 36 34-36 =
-2M 35 80 35 -1
2011.GUGS 81
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:Isotope Atomic
#Mass
## of
protons# of
neutrons
# of electrons
charge
L 34 34 + 30 = 64
34 30 36 34-36 =
-2M 35 80 35 80-35 =
45-1
2011.GUGS 82
ELEMENTS & USING THE PERIODIC TABLE
Complete the table:Isotope Atomic
#Mass
## of
protons# of
neutrons
# of electrons
charge
L 34 34 + 30 = 64
34 30 36 34-36 =
-2M 35 80 35 80-35 =
4535 + 1 = 36
-1
2011.GUGS 83
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 Na +
Sulfur, S S 2-
Magnesium, Mg
Mg 2+
Aluminum, Al
Al 3+
2011.GUGS 84
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 S 2-
Magnesium, Mg
Mg 2+
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
Mg 2+
Aluminum, Al
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
Metal Cation Loses 2 lost Mg 2+
Aluminum, Al
Al 3+
2011.GUGS 87
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
Metal Cation Loses 2 lost Mg 2+
Aluminum, Al
Metal Cation Loses 3 lost Al 3+
2011.GUGS 88
FORMULAS & NAMES OF IONIC COMPOUNDS
Complete the table:Element Cation
formulaElement Anion
formulaCompound formula
Name
Calcium Nitrogen
Sodium Sulfur
Aluminum
Fluorine
2011.GUGS 89
FORMULAS & NAMES OF IONIC COMPOUNDS
Complete the table:Element Cation
formulaElement Anion
formulaCompound formula
Name
Calcium Ca2+ Nitrogen N3- Ca3N2Calcium nitride
Sodium Sulfur
Aluminum
Fluorine
2011.GUGS 90
FORMULAS & NAMES OF IONIC COMPOUNDS
Complete the table:Element Cation
formulaElement Anion
formulaCompound formula
Name
Calcium Ca2+ Nitrogen N3- Ca3N2Calcium nitride
Sodium Na+ Sulfur S- Na2S Sodium sulfide
Aluminum
Fluorine
2011.GUGS 91
FORMULAS & NAMES OF IONIC COMPOUNDS
Complete the table:Element Cation
formulaElement Anion
formulaCmpd formula
Name
Calcium Ca2+ Nitrogen N3- Ca3N2Calcium nitride
Sodium Na+ Sulfur S- Na2S Sodium sulfide
Aluminum
Al3+ Fluorine F- AlF3Aluminum
fluoride
2011.GUGS 92
FORMULAS & NAMES OF IONIC COMPOUNDS
Write the formula for magnesium hydroxide:
2011.GUGS 93
FORMULAS & NAMES OF IONIC COMPOUNDS
Write the formula for magnesium hydroxide:Mg(OH)2
2011.GUGS 94
FORMULAS & NAMES OF IONIC COMPOUNDS
How many oxygen atoms are in the chemical formula Ba3(PO4)2?
2011.GUGS 95
FORMULAS & NAMES OF IONIC COMPOUNDS
Write the formula for barium phosphate:Ba3(PO4)2
2011.GUGS 96
FORMULAS & NAMES OF IONIC COMPOUNDS
How many oxygen atoms are in the chemical formula Ba3(PO4)2?
2 X 4 = 8
2011.GUGS 97
WATER & THE HYDROLOGIC CYCLE
What is the difference between direct and indirect water use?
2011.GUGS 98
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.
2011.GUGS 99
WATER & THE HYDROLOGIC CYCLE
List 4 ways you can conserve water:
2011.GUGS 100
WATER & THE HYDROLOGIC CYCLE
List 4 ways you can conserve water:
2011.GUGS 101
WATER & THE HYDROLOGIC CYCLE
List & describe the processes (steps) in the hydrologic cycle.
2011.GUGS 102
WATER & THE HYDROLOGIC CYCLEList 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.
2011.GUGS 103
The Hydrologic Cycle: Insert the following termsIn the diagram:•Evaporation•Respiration•Transpiration•Precipitation•Runoff•Condensation
2011.GUGS 104
The Hydrologic Cycle: Insert the following termsIn the diagram:•Evaporation•Respiration•Transpiration•Precipitation•Runoff•Condensation
2011.GUGS 105
WATER & THE HYDROLOGIC CYCLE
Huge underground storehouses of water made rock, sand, or gravel are known as ____________.
2011.GUGS 106
WATER & THE HYDROLOGIC CYCLE
Huge underground storehouses of water made rock, sand, or gravel are known as aquifers.
2011.GUGS 107
SOLUTIONS & SOLUBILITYDefine:1. Solute:
2. Solvent:
2011.GUGS 108
SOLUTIONS & SOLUBILITYDefine:1. Solute: A substance dissolved in
another substance, usually the component of a solution present in the lesser amount.
2. Solvent:
2011.GUGS 109
SOLUTIONS & SOLUBILITYDefine: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.
2011.GUGS 110
SOLUTIONS & SOLUBILITY
Define the following:1. Unsaturated2. Saturated3. Supersaturated4. Electrolyte
2011.GUGS 111
SOLUTIONS & SOLUBILITY
Define the following:
1. Unsaturated: a solution that has LESS than the maximum amount of solute.
2. Saturated3. Supersaturated4. 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: 4. Electrolyte:
2011.GUGS 113
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:
2011.GUGS 114
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: 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.
2011.GUGS 115
SOLUTIONS & SOLUBILITY
If the temperature of a solution with a gaseous solute increases, the solubility ______________.
2011.GUGS 116
SOLUTIONS & SOLUBILITY
If the temperature of a solution with a gaseous solute increases, the solubility decreases.
2011.GUGS 117
SOLUTIONS & SOLUBILITY
If the temperature of a solution with a solids solute increases, the solubility ________________.
2011.GUGS 118
SOLUTIONS & SOLUBILITY
If the temperature of a solution with a solids solute increases, the solubility increases.
2011.GUGS 119
SOLUTIONS & SOLUBILITY
Explain why water is known as the universal solvent.
2011.GUGS 120
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 121
SOLUTIONS & SOLUBILITY
Explain what is meant by a polar molecule.Give an example.
2011.GUGS 122
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.
2011.GUGS 123
SOLUTIONS & SOLUBILITY
Explain why water and oil do not mix.
2011.GUGS 124
SOLUTIONS & SOLUBILITY
Explain why water and oil do not mix.Water is polar & oil is non polar.
2011.GUGS 125
SOLUTIONS & SOLUBILITY
Explain how water dissolves ionic compounds.
2011.GUGS 126
SOLUTIONS & SOLUBILITY
Explain how water dissolves ionic compounds.
Polar water molecules attract ions & pull the ionic compound apart.
2011.GUGS 127
SOLUTIONS & SOLUBILITY
COMPLETE THE TABLE:
SOLUTE SOLUBLE IN WATER?
SOLUBLE IN MINERAL
OIL?
POLAR OR NON
POLAR?1 YES NO
2 NO YES
3 YES NO
2011.GUGS 128
SOLUTIONS & SOLUBILITY
COMPLETE THE TABLE:
SOLUTE SOLUBLE IN WATER?
SOLUBLE IN MINERAL
OIL?
POLAR OR NON
POLAR?1 YES NO POLAR
2 NO YES NON POLAR
3 YES NO POLAR
2011.GUGS 129
SOLUTIONS & SOLUBILITY: PROPERTIES OF SOLIDS
COMPLETE THE TABLE:SOLUTE DISSOLVES
IN WATER?CONDUCTS ELECTRICITY IN WATER?
IONIC OR MOLECULAR
SOLUTE?1 YES NO
2 YES YES
3 NO NO
2011.GUGS 130
SOLUTIONS & SOLUBILITY: PROPERTIES OF SOLIDS
COMPLETE THE TABLE:SOLUTE DISSOLVES
IN WATER?CONDUCTS ELECTRICITY IN WATER?
IONIC OR MOLECULAR
SOLUTE?1 YES NO MOLECULAR
2 YES YES
3 NO NO
2011.GUGS 131
SOLUTIONS & SOLUBILITY: PROPERTIES OF SOLIDS
COMPLETE THE TABLE:SOLUTE DISSOLVES
IN WATER?CONDUCTS ELECTRICITY IN WATER?
IONIC OR MOLECULAR
SOLUTE?1 YES NO MOLECULAR
2 YES YES IONIC
3 NO NO
2011.GUGS 132
SOLUTIONS & SOLUBILITY: PROPERTIES OF SOLIDS
COMPLETE THE TABLE:SOLUTE DISSOLVES
IN WATER?CONDUCTS ELECTRICITY IN WATER?
IONIC OR MOLECULAR
SOLUTE?1 YES NO MOLECULAR
2 YES YES IONIC
3 NO NO MOLECULAR
2011.GUGS 133
SOLUTIONS & SOLUBILITY
Using the graph, what is the solubility ofpotassium chloride (KCl) at 80oC?
2011.GUGS 134
SOLUTIONS & SOLUBILITY
Using the graph, what is the solubility ofpotassium chloride (KCl) at 80oC?50 grams
2011.GUGS 135
SOLUTIONS & SOLUBILITY
Using the graph, what is the solubility ofAmmonia (NH3) at 20oC?
2011.GUGS 136
SOLUTIONS & SOLUBILITY
Using the graph, what is the solubility ofAmmonia (NH3) at 20oC?52 grams
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?
2011.GUGS 138
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 139
pHComplete the table.
pH Acidic, basic, or neutral?
1
5
7
9
13
2011.GUGS 140
pHComplete the table.
pH Acidic, basic, or neutral?
1 acidic
5 acidic
7 neutral
9 basic
13 basic
2011.GUGS 141
pHAn example of a substance that is basic
is .
2011.GUGS 142
pHAn example of a substance that is
acidic is .
2011.GUGS 143
pHAn example of a substance that is
neutral is .