Based on the periodic table shown here which elements will most likely form an ionic bond Na and Cl and Li and F C and O N and O Si and Cl all of the above Based on the periodic table shown here which elements will most likely form an ionic bond ID: 658386
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Slide1
The Chemical Context of LifeSlide2
Based on the periodic table shown here, which elements will most likely form an ionic bond?
Na and Cl, and Li and F
C and ON and OSi and Clall of the aboveSlide3
Based on the periodic table shown here, which elements will most likely form an ionic bond?
Na and
Cl, and Li and FC and ON and O
Si and
Cl
all of the aboveSlide4
Based on the periodic table shown here, which elements will most likely form a covalent bond?
Na and Cl
C and ON and OSi and ClH and HSlide5
Based on the periodic table shown here, which elements will most likely form a covalent bond?
Na and
ClC and ON and O
Si and
Cl
H and HSlide6
Titanium has an atomic number of 22. How many protons, neutrons, and electrons are in an isotope of titanium with mass number of 48?
p 22,
n
26, e
22
p
11,
n
26,
e
11
p
11,
n
11,
e
70
p
11,
n
22,
e
48
p
22,
n
22,
e
48Slide7
Titanium has an atomic number of 22. How many protons, neutrons, and electrons are in an isotope of titanium with mass number of 48?
p 22,
n
26, e
22
p
11,
n
26,
e
11
p
11,
n
11,
e
70
p
11,
n
22,
e
48
p
22,
n
22,
e
48Slide8
H
2
O can be considered ______, but H2 can only be considered ______.an isotope and a molecule; a molecule
an isotope and a molecule; an isotope
a compound and an isotope; a molecule
a molecule and a compound; a compounda molecule and a compound; a moleculeSlide9
H
2
O can be considered ______, but H2 can only be considered ______.an isotope and a molecule; a molecule
an isotope and a molecule; an isotope
a compound and an isotope; a molecule
a molecule and a compound; a compound
a molecule and a compound; a moleculeSlide10
What do elements with atomic numbers 6, 14, and 22 have in common?
same number of electrons
same atomic masssame number of valence electrons and will form the same number of covalent bonds
all of the above
none of the aboveSlide11
What do elements with atomic numbers 6, 14, and 22 have in common?
same number of electrons
same atomic masssame number of valence electrons and will form the same number of covalent bondsall of the above
none of the aboveSlide12
What type of bond is very prevalent in lipids and gives lipids their properties?
polar covalent
nonpolar covalentstrong ionicweak ionichydrogenSlide13
What type of bond is very prevalent in lipids and gives lipids their properties?
polar covalent
nonpolar covalentstrong ionicweak ionichydrogenSlide14
An atom of oxygen has an atomic number of 8. How many electrons are in the first, second, and third electron shells, respectively?
2, 3, 3
2, 6, 08, 0, 00, 4, 4
none of the aboveSlide15
An atom of oxygen has an atomic number of 8. How many electrons are in the first, second, and third electron shells, respectively?
2, 3, 3
2, 6, 08, 0, 00, 4, 4
none of the aboveSlide16
What numbers must be placed as coefficients in the blanks for the chemical reaction below in order to ensure that matter is conserved?
1; 1; 1
4; 3; 4
2; 1; 2
3; 4; 3
0; 3; 4
Fe
3
O
4
__
C
__Fe
__COSlide17
What numbers must be placed as coefficients in the blanks for the chemical reaction below in order to ensure that matter is conserved?
1; 1; 1
4; 3; 4
2; 1; 2
3; 4; 3
0; 3; 4
Fe
3
O
4
__C
__Fe
__COSlide18
Of the four most commonly found elements in the human body, which has the most valence electrons?
O
CHNSlide19
Of the four most commonly found elements in the human body, which has the most valence electrons?
O
CHNSlide20
Lithium and fluorine are most likely to form which type of bond?
polar covalent
nonpolar covalentionichydrogenA and B are equally likelySlide21
Lithium and fluorine are most likely to form which type of bond?
polar covalent
nonpolar covalentionichydrogenA and B are equally likelySlide22
Carbon-14 dating works for fossils up to about 75,000 years old. Most dinosaurs went extinct 65.5 million years ago. Can
14
C be used to date dinosaur bones?
Yes; the bones continued to take in
14
C
, even after the dinosaur died.
No; the
14
C
present in the dinosaur when it died would decay too much to be measured after 65.5 million years.
No;
14
C
can only be used to date dinosaur teeth, which are much stronger than bones.
Yes; the bones contained
14
C when the dinosaur died so it can be measured to determine the fossil
’
s age.Slide23
Carbon-14 dating works for fossils up to about 75,000 years old. Most dinosaurs went extinct 65.5 million years ago. Can
14
C be used to date dinosaur bones?
Yes; the bones continued to take in
14
C
, even after the dinosaur died.
No; the
14
C
present in the dinosaur when it died would decay too much to be measured after 65.5 million years.
No;
14
C
can only be used to date dinosaur teeth, which are much stronger than bones.
Yes; the bones contained
14
C
when the dinosaur died so it can be measured to determine the fossil
’
s age.Slide24
Radioactive uranium-235 has a half-life of 704 million years. If it was incorporated into dinosaur bones, could it be used to date the dinosaur fossils?
Yes; after 65.5 million years only about one-tenth
of the
235
U would have decayed, leaving plenty to measure in the fossils.
No; the dinosaurs went extinct too recently to use a radioisotope with a half-life of 704 million years.
No; only about one tenth of the
235
U would have decayed after 65.5 million years, not leaving enough to measure in the fossils.
Yes; but only for dinosaurs that lived more than 704 million years ago.Slide25
Radioactive uranium-235 has a half-life of 704 million years. If it was incorporated into dinosaur bones, could it be used to date the dinosaur fossils?
Yes; after 65.5 million years only about one-tenth of the
235
U would have decayed, leaving plenty to measure in the fossils.
No; the dinosaurs went extinct too recently to use a radioisotope with a half-life of 704 million years.
No; only about one tenth of the
235
U would have decayed after 65.5 million years, not leaving enough to measure in the fossils.
Yes; but only for dinosaurs that lived more than 704 million years ago.