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1) which of the following is the hoh bond angle in water, h2o?
a.109.5o
b.120.0o
c.104.5o
d.90.0o
2) which of the following is true when comparing two electrons which are in different
shells of an atom?
a.the electron in the higher numbered shell is closer to the nucleus and is easier to
remove.
b.the electron in the higher numbered shell is closer to the nucleus and is harder to
remove.
c.the electron in the higher numbered shell is further from the nucleus and is easier to
remove.
d.the electron in the higher numbered shell is further from the nucleus and is harder to
remove.
3) what is the systematic name of cs2?
a.carbon disulfur
b.carbon sulfide
c.carbon(iv) sulfide
d.carbon disulfide
4) which of the following is the correct way to write the formula of the compound
formed between the barium ion and the sulfate ion?
a.ba2(so4)2
b.ba2so4
c.ba(so4)2
d.baso4
5) which of the following is true of diabetes insipidus?
a.it is another name for diabetes mellitus.
b.one of its symptoms is high blood glucose levels.
c.one of its symptoms is a high concentration of solids in the urine.
d.none of the above is true.
6) which of the following could be used to separate the components of a mixture of
ethyl alcohol (ethanol) and water?
a.pouring the liquid off the solid
b.distillation
c.filtration
d.none of these
7) in which of the following molecules does the carbon atom have a linear distribution
of electron density?
a.c2h2
b.c2h4
c.c2h6
d.none of these
8) the properties of ductility, malleability, ability to conduct heat and electricity are
characteristics of what type of material?
a.all elements
b.metallic elements
c.metalloid elements
d.nonmetallic elements
9) in which portion of a nephron are glucose and amino acids reabsorbed?
a.the distal tubulec.the glomerulus
b.henle's loopd.the proximal tubule
10) high electronegativities are associated with which type of elements?
a.metals
b.metalloids
c.noble gases
d.nonmetals
11) which of the following is a metalloid?
a.s
b.si
c.sn
d.sr
12) atoms of which of the following elements are largest?
a.cl
b.p
c.s
d.none, they are all the same size.
13) the chemical formula of rust is fe2o3. which of the following is the correct common
name for this compound?
a.iron oxide
b.ferric oxide
c.ferrous oxide
d.diiron trioxide
14) what bond angle is most closely associated with a trigonal planar distribution of
electron density?
a.90o
b.109.5o
c.120o
d.180o
15) when potassium loses an electron to form k+, which electron is lost?
a.1s
b.2s
c.3s
d.4s
16) the number of valence electrons of a main group element is related to which of the
following?
a.the elements atomic number
b.the elements atomic weight
c.the elements column number
d.none of the above
17) what is the correct systematic name for the compound with the formula cucl2?
a.cupric chloride
b.cuprous chloride
c.copper(ii) chloride
d.copper(ii) chlorine
18) which of the following has the highest ionization energy?
a.ba
b.ca
c.mg
d.sr
19) what is the correct name for mgo?
a.monomagnesium monoxide
b.magnesium monoxide
c.magnesium oxide
d.magnesium oxygen
20) consider the periodic table given below.
which number represents the element with the smallest number of protons?
a.1
b.2
c.3
d.4
e.5
f.6
g.7
