Integrated Physics and Chemistry TEKS Correlations
(7) Science concepts. The student knows relationships exist between properties
of matter and its components. The student is expected to:
(D)relate the chemical behavior of an element including bonding, to its placement on the periodic table; and
56.
Arsenic is toxic to humans when it replaces phosphorus in important biological molecules. Arsenic is able
to replace phosphorous in these molecules because the two elements have the same —
A.
B.
C.
D.
57.
Students are trying to predict which elements might combine chemically based on the periodic table.
Which of the element pairs listed would most likely bond ionically?
A.
B.
C.
D.
58.
Ag and C
Sr and Na
Li and O
Kr and Ge
What type of bond most likely forms between carbon and oxygen?
A.
B.
C.
D.
59.
atomic number
number of valence electrons
atomic mass
number of energy levels
Diatomic
Ionic
Covalent
Hydrogen
The formula for magnesium chloride is MgCl2 because —
A.
B.
C.
D.
magnesium forms a +1 ion, and chlorine forms a -2 ion
magnesium forms a +12 ion, and chlorine forms a -17 ion
magnesium forms a +2 ion, and chlorine forms a -1 ion
magnesium forms a +2 ion, and chlorine forms a -7 ion
Items 56-59 all emphasize the importance of students being able to use the periodic table.
The first item is integrated to biology, but even if the students don’t recognize the biological
molecules listed, they should know that elements in the same column of the periodic table
have similar properties. The remaining two questions ask specifically about how atoms will
bond based on their position on the periodic table. Students must use this tool in a variety of
ways to become comfortable with it.
Charles A. Dana Center
Science TEKS Toolkit
www.sciencetekstoolkit.org