16
Warm-up 1/29/08 1. Multiple these exponents ( x 6 ) ( w 2 ) ( x 5 ) ( y 9 ) ( w 4 ) ( x 8 ) 2. Simplify. x -4 · y 3 · z 5 · x 5 · y -1 ÷ z 2
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Warm-up 12908
1 Multiple these exponents( x6) ( w2) ( x5) ( y9) ( w4) ( x8)
2 Simplify
x-4 middot y3 middot z5 middot x5 middot y-1 divide z2
PS-23
Explain the trends of the periodic table based on the elementsrsquo valence electrons and atomic numbers
Period is the term used to describe a horizontal row on the periodic table
Group and family are terms used to describe a vertical column on the periodic table
Metals
Metals have 3 or fewer valance electrons Metals lose electrons when making an ionic bond Metals are good conductors malleable and ductile
Warm-up 13108
1Simplify
w x2 z3 x-3 z w-1
2 Simplify
ab2cd3 a2b3cd-1
Metalloids
Metalloids have some characteristics of metals and some of nonmetals they border the line between metals and nonmetals on the periodic table
Non-Metals
On the EOC students must
Locate referenced elements when prompted with a period number or group number
Determine a given elementrsquos atomic number (number of protons)
Determine the number of electrons that an atom of a given element contains (the same as the number of protons-atomic number)
Determine how many energy levels are occupied in a given element (recognize that the period in which an element appears on the periodic table indicates the number of occupied energy levels)
bullFor example all elements in period 4 have four occupied energy levels
Recognize a given elementrsquos atomic mass (the weighted average of the masses of the naturally occurring isotopes of the element)
It is always larger than the atomic number and generally increases from left to right on the Periodic Table
Determine the number of valence electrons (electrons in the outer-most energy level) for selected groups of elements when given the elementrsquos group number or name
Group Family Name valence e-
1 Alkali metals 1
2 Alkaline Earth Metals 2
13 3
14 4
15 5
16 Oxygen group 6
17 Halogens 7
18 Nobel Gasses 8 (except He)
Periodic trends in the number of valence electrons
From left to right across periods 1-3Atoms of all these elements contain
one more valence electron than the atoms of the previous elementFrom top to bottom within any group
Atoms of all of the elements in a given group contain the same number of
valence electrons
Pure Calcium
Periodic trends in the number of energy levels
From left to right across any periodAtoms of all elements in a given period have the same number of energy levels
From top to bottom within any group
Atoms of each subsequent element (from top to bottom) in any given group contain one more energy level than the atoms of the element above
Homework
p 553 1-4p 562 1-4
PS-23
Explain the trends of the periodic table based on the elementsrsquo valence electrons and atomic numbers
Period is the term used to describe a horizontal row on the periodic table
Group and family are terms used to describe a vertical column on the periodic table
Metals
Metals have 3 or fewer valance electrons Metals lose electrons when making an ionic bond Metals are good conductors malleable and ductile
Warm-up 13108
1Simplify
w x2 z3 x-3 z w-1
2 Simplify
ab2cd3 a2b3cd-1
Metalloids
Metalloids have some characteristics of metals and some of nonmetals they border the line between metals and nonmetals on the periodic table
Non-Metals
On the EOC students must
Locate referenced elements when prompted with a period number or group number
Determine a given elementrsquos atomic number (number of protons)
Determine the number of electrons that an atom of a given element contains (the same as the number of protons-atomic number)
Determine how many energy levels are occupied in a given element (recognize that the period in which an element appears on the periodic table indicates the number of occupied energy levels)
bullFor example all elements in period 4 have four occupied energy levels
Recognize a given elementrsquos atomic mass (the weighted average of the masses of the naturally occurring isotopes of the element)
It is always larger than the atomic number and generally increases from left to right on the Periodic Table
Determine the number of valence electrons (electrons in the outer-most energy level) for selected groups of elements when given the elementrsquos group number or name
Group Family Name valence e-
1 Alkali metals 1
2 Alkaline Earth Metals 2
13 3
14 4
15 5
16 Oxygen group 6
17 Halogens 7
18 Nobel Gasses 8 (except He)
Periodic trends in the number of valence electrons
From left to right across periods 1-3Atoms of all these elements contain
one more valence electron than the atoms of the previous elementFrom top to bottom within any group
Atoms of all of the elements in a given group contain the same number of
valence electrons
Pure Calcium
Periodic trends in the number of energy levels
From left to right across any periodAtoms of all elements in a given period have the same number of energy levels
From top to bottom within any group
Atoms of each subsequent element (from top to bottom) in any given group contain one more energy level than the atoms of the element above
Homework
p 553 1-4p 562 1-4
Period is the term used to describe a horizontal row on the periodic table
Group and family are terms used to describe a vertical column on the periodic table
Metals
Metals have 3 or fewer valance electrons Metals lose electrons when making an ionic bond Metals are good conductors malleable and ductile
Warm-up 13108
1Simplify
w x2 z3 x-3 z w-1
2 Simplify
ab2cd3 a2b3cd-1
Metalloids
Metalloids have some characteristics of metals and some of nonmetals they border the line between metals and nonmetals on the periodic table
Non-Metals
On the EOC students must
Locate referenced elements when prompted with a period number or group number
Determine a given elementrsquos atomic number (number of protons)
Determine the number of electrons that an atom of a given element contains (the same as the number of protons-atomic number)
Determine how many energy levels are occupied in a given element (recognize that the period in which an element appears on the periodic table indicates the number of occupied energy levels)
bullFor example all elements in period 4 have four occupied energy levels
Recognize a given elementrsquos atomic mass (the weighted average of the masses of the naturally occurring isotopes of the element)
It is always larger than the atomic number and generally increases from left to right on the Periodic Table
Determine the number of valence electrons (electrons in the outer-most energy level) for selected groups of elements when given the elementrsquos group number or name
Group Family Name valence e-
1 Alkali metals 1
2 Alkaline Earth Metals 2
13 3
14 4
15 5
16 Oxygen group 6
17 Halogens 7
18 Nobel Gasses 8 (except He)
Periodic trends in the number of valence electrons
From left to right across periods 1-3Atoms of all these elements contain
one more valence electron than the atoms of the previous elementFrom top to bottom within any group
Atoms of all of the elements in a given group contain the same number of
valence electrons
Pure Calcium
Periodic trends in the number of energy levels
From left to right across any periodAtoms of all elements in a given period have the same number of energy levels
From top to bottom within any group
Atoms of each subsequent element (from top to bottom) in any given group contain one more energy level than the atoms of the element above
Homework
p 553 1-4p 562 1-4
Metals
Metals have 3 or fewer valance electrons Metals lose electrons when making an ionic bond Metals are good conductors malleable and ductile
Warm-up 13108
1Simplify
w x2 z3 x-3 z w-1
2 Simplify
ab2cd3 a2b3cd-1
Metalloids
Metalloids have some characteristics of metals and some of nonmetals they border the line between metals and nonmetals on the periodic table
Non-Metals
On the EOC students must
Locate referenced elements when prompted with a period number or group number
Determine a given elementrsquos atomic number (number of protons)
Determine the number of electrons that an atom of a given element contains (the same as the number of protons-atomic number)
Determine how many energy levels are occupied in a given element (recognize that the period in which an element appears on the periodic table indicates the number of occupied energy levels)
bullFor example all elements in period 4 have four occupied energy levels
Recognize a given elementrsquos atomic mass (the weighted average of the masses of the naturally occurring isotopes of the element)
It is always larger than the atomic number and generally increases from left to right on the Periodic Table
Determine the number of valence electrons (electrons in the outer-most energy level) for selected groups of elements when given the elementrsquos group number or name
Group Family Name valence e-
1 Alkali metals 1
2 Alkaline Earth Metals 2
13 3
14 4
15 5
16 Oxygen group 6
17 Halogens 7
18 Nobel Gasses 8 (except He)
Periodic trends in the number of valence electrons
From left to right across periods 1-3Atoms of all these elements contain
one more valence electron than the atoms of the previous elementFrom top to bottom within any group
Atoms of all of the elements in a given group contain the same number of
valence electrons
Pure Calcium
Periodic trends in the number of energy levels
From left to right across any periodAtoms of all elements in a given period have the same number of energy levels
From top to bottom within any group
Atoms of each subsequent element (from top to bottom) in any given group contain one more energy level than the atoms of the element above
Homework
p 553 1-4p 562 1-4
Warm-up 13108
1Simplify
w x2 z3 x-3 z w-1
2 Simplify
ab2cd3 a2b3cd-1
Metalloids
Metalloids have some characteristics of metals and some of nonmetals they border the line between metals and nonmetals on the periodic table
Non-Metals
On the EOC students must
Locate referenced elements when prompted with a period number or group number
Determine a given elementrsquos atomic number (number of protons)
Determine the number of electrons that an atom of a given element contains (the same as the number of protons-atomic number)
Determine how many energy levels are occupied in a given element (recognize that the period in which an element appears on the periodic table indicates the number of occupied energy levels)
bullFor example all elements in period 4 have four occupied energy levels
Recognize a given elementrsquos atomic mass (the weighted average of the masses of the naturally occurring isotopes of the element)
It is always larger than the atomic number and generally increases from left to right on the Periodic Table
Determine the number of valence electrons (electrons in the outer-most energy level) for selected groups of elements when given the elementrsquos group number or name
Group Family Name valence e-
1 Alkali metals 1
2 Alkaline Earth Metals 2
13 3
14 4
15 5
16 Oxygen group 6
17 Halogens 7
18 Nobel Gasses 8 (except He)
Periodic trends in the number of valence electrons
From left to right across periods 1-3Atoms of all these elements contain
one more valence electron than the atoms of the previous elementFrom top to bottom within any group
Atoms of all of the elements in a given group contain the same number of
valence electrons
Pure Calcium
Periodic trends in the number of energy levels
From left to right across any periodAtoms of all elements in a given period have the same number of energy levels
From top to bottom within any group
Atoms of each subsequent element (from top to bottom) in any given group contain one more energy level than the atoms of the element above
Homework
p 553 1-4p 562 1-4
Metalloids
Metalloids have some characteristics of metals and some of nonmetals they border the line between metals and nonmetals on the periodic table
Non-Metals
On the EOC students must
Locate referenced elements when prompted with a period number or group number
Determine a given elementrsquos atomic number (number of protons)
Determine the number of electrons that an atom of a given element contains (the same as the number of protons-atomic number)
Determine how many energy levels are occupied in a given element (recognize that the period in which an element appears on the periodic table indicates the number of occupied energy levels)
bullFor example all elements in period 4 have four occupied energy levels
Recognize a given elementrsquos atomic mass (the weighted average of the masses of the naturally occurring isotopes of the element)
It is always larger than the atomic number and generally increases from left to right on the Periodic Table
Determine the number of valence electrons (electrons in the outer-most energy level) for selected groups of elements when given the elementrsquos group number or name
Group Family Name valence e-
1 Alkali metals 1
2 Alkaline Earth Metals 2
13 3
14 4
15 5
16 Oxygen group 6
17 Halogens 7
18 Nobel Gasses 8 (except He)
Periodic trends in the number of valence electrons
From left to right across periods 1-3Atoms of all these elements contain
one more valence electron than the atoms of the previous elementFrom top to bottom within any group
Atoms of all of the elements in a given group contain the same number of
valence electrons
Pure Calcium
Periodic trends in the number of energy levels
From left to right across any periodAtoms of all elements in a given period have the same number of energy levels
From top to bottom within any group
Atoms of each subsequent element (from top to bottom) in any given group contain one more energy level than the atoms of the element above
Homework
p 553 1-4p 562 1-4
Non-Metals
On the EOC students must
Locate referenced elements when prompted with a period number or group number
Determine a given elementrsquos atomic number (number of protons)
Determine the number of electrons that an atom of a given element contains (the same as the number of protons-atomic number)
Determine how many energy levels are occupied in a given element (recognize that the period in which an element appears on the periodic table indicates the number of occupied energy levels)
bullFor example all elements in period 4 have four occupied energy levels
Recognize a given elementrsquos atomic mass (the weighted average of the masses of the naturally occurring isotopes of the element)
It is always larger than the atomic number and generally increases from left to right on the Periodic Table
Determine the number of valence electrons (electrons in the outer-most energy level) for selected groups of elements when given the elementrsquos group number or name
Group Family Name valence e-
1 Alkali metals 1
2 Alkaline Earth Metals 2
13 3
14 4
15 5
16 Oxygen group 6
17 Halogens 7
18 Nobel Gasses 8 (except He)
Periodic trends in the number of valence electrons
From left to right across periods 1-3Atoms of all these elements contain
one more valence electron than the atoms of the previous elementFrom top to bottom within any group
Atoms of all of the elements in a given group contain the same number of
valence electrons
Pure Calcium
Periodic trends in the number of energy levels
From left to right across any periodAtoms of all elements in a given period have the same number of energy levels
From top to bottom within any group
Atoms of each subsequent element (from top to bottom) in any given group contain one more energy level than the atoms of the element above
Homework
p 553 1-4p 562 1-4
On the EOC students must
Locate referenced elements when prompted with a period number or group number
Determine a given elementrsquos atomic number (number of protons)
Determine the number of electrons that an atom of a given element contains (the same as the number of protons-atomic number)
Determine how many energy levels are occupied in a given element (recognize that the period in which an element appears on the periodic table indicates the number of occupied energy levels)
bullFor example all elements in period 4 have four occupied energy levels
Recognize a given elementrsquos atomic mass (the weighted average of the masses of the naturally occurring isotopes of the element)
It is always larger than the atomic number and generally increases from left to right on the Periodic Table
Determine the number of valence electrons (electrons in the outer-most energy level) for selected groups of elements when given the elementrsquos group number or name
Group Family Name valence e-
1 Alkali metals 1
2 Alkaline Earth Metals 2
13 3
14 4
15 5
16 Oxygen group 6
17 Halogens 7
18 Nobel Gasses 8 (except He)
Periodic trends in the number of valence electrons
From left to right across periods 1-3Atoms of all these elements contain
one more valence electron than the atoms of the previous elementFrom top to bottom within any group
Atoms of all of the elements in a given group contain the same number of
valence electrons
Pure Calcium
Periodic trends in the number of energy levels
From left to right across any periodAtoms of all elements in a given period have the same number of energy levels
From top to bottom within any group
Atoms of each subsequent element (from top to bottom) in any given group contain one more energy level than the atoms of the element above
Homework
p 553 1-4p 562 1-4
Determine how many energy levels are occupied in a given element (recognize that the period in which an element appears on the periodic table indicates the number of occupied energy levels)
bullFor example all elements in period 4 have four occupied energy levels
Recognize a given elementrsquos atomic mass (the weighted average of the masses of the naturally occurring isotopes of the element)
It is always larger than the atomic number and generally increases from left to right on the Periodic Table
Determine the number of valence electrons (electrons in the outer-most energy level) for selected groups of elements when given the elementrsquos group number or name
Group Family Name valence e-
1 Alkali metals 1
2 Alkaline Earth Metals 2
13 3
14 4
15 5
16 Oxygen group 6
17 Halogens 7
18 Nobel Gasses 8 (except He)
Periodic trends in the number of valence electrons
From left to right across periods 1-3Atoms of all these elements contain
one more valence electron than the atoms of the previous elementFrom top to bottom within any group
Atoms of all of the elements in a given group contain the same number of
valence electrons
Pure Calcium
Periodic trends in the number of energy levels
From left to right across any periodAtoms of all elements in a given period have the same number of energy levels
From top to bottom within any group
Atoms of each subsequent element (from top to bottom) in any given group contain one more energy level than the atoms of the element above
Homework
p 553 1-4p 562 1-4
Recognize a given elementrsquos atomic mass (the weighted average of the masses of the naturally occurring isotopes of the element)
It is always larger than the atomic number and generally increases from left to right on the Periodic Table
Determine the number of valence electrons (electrons in the outer-most energy level) for selected groups of elements when given the elementrsquos group number or name
Group Family Name valence e-
1 Alkali metals 1
2 Alkaline Earth Metals 2
13 3
14 4
15 5
16 Oxygen group 6
17 Halogens 7
18 Nobel Gasses 8 (except He)
Periodic trends in the number of valence electrons
From left to right across periods 1-3Atoms of all these elements contain
one more valence electron than the atoms of the previous elementFrom top to bottom within any group
Atoms of all of the elements in a given group contain the same number of
valence electrons
Pure Calcium
Periodic trends in the number of energy levels
From left to right across any periodAtoms of all elements in a given period have the same number of energy levels
From top to bottom within any group
Atoms of each subsequent element (from top to bottom) in any given group contain one more energy level than the atoms of the element above
Homework
p 553 1-4p 562 1-4
Group Family Name valence e-
1 Alkali metals 1
2 Alkaline Earth Metals 2
13 3
14 4
15 5
16 Oxygen group 6
17 Halogens 7
18 Nobel Gasses 8 (except He)
Periodic trends in the number of valence electrons
From left to right across periods 1-3Atoms of all these elements contain
one more valence electron than the atoms of the previous elementFrom top to bottom within any group
Atoms of all of the elements in a given group contain the same number of
valence electrons
Pure Calcium
Periodic trends in the number of energy levels
From left to right across any periodAtoms of all elements in a given period have the same number of energy levels
From top to bottom within any group
Atoms of each subsequent element (from top to bottom) in any given group contain one more energy level than the atoms of the element above
Homework
p 553 1-4p 562 1-4
Periodic trends in the number of valence electrons
From left to right across periods 1-3Atoms of all these elements contain
one more valence electron than the atoms of the previous elementFrom top to bottom within any group
Atoms of all of the elements in a given group contain the same number of
valence electrons
Pure Calcium
Periodic trends in the number of energy levels
From left to right across any periodAtoms of all elements in a given period have the same number of energy levels
From top to bottom within any group
Atoms of each subsequent element (from top to bottom) in any given group contain one more energy level than the atoms of the element above
Homework
p 553 1-4p 562 1-4
Pure Calcium
Periodic trends in the number of energy levels
From left to right across any periodAtoms of all elements in a given period have the same number of energy levels
From top to bottom within any group
Atoms of each subsequent element (from top to bottom) in any given group contain one more energy level than the atoms of the element above
Homework
p 553 1-4p 562 1-4
Periodic trends in the number of energy levels
From left to right across any periodAtoms of all elements in a given period have the same number of energy levels
From top to bottom within any group
Atoms of each subsequent element (from top to bottom) in any given group contain one more energy level than the atoms of the element above
Homework
p 553 1-4p 562 1-4
Homework
p 553 1-4p 562 1-4
