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Semester 1 Final Review 2
Semester 1 Final Review 2
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1
a mortar and pestle is used to
scare cats
store substances
grind up solids
mix liquid
2
Becquerel is credited with the discovery of
spontaneous radiation
x-rays
the atomic nucleus
the neutron
3
Rutherford discovered much about the structure of an atom when he bombarded gold atoms with
x rays
beta particles
alpha particles
gamma rays
4
Atoms of the same element with different numbers of neutrons are known as
isotopes
ions
isomers
allotropes
5
Which is not a characteristic of an ionic compound
good electrical conductor when melted
high melting point
cyrstalline
composed of two non-metals
6
Which of the following is NOT the correct formula for an ionic compound?
NH4OH
Ca2O
Na2O
LiF
7
Ionization energy is the amount of energy needed to
form either a positive or negative ion
push an electron to a higher energy level
completely remove an electron from an atom
keep an electron from dropping to the lowest energy level
8
The ferric ion is Fe
3+
. Based on our rules for naming, the ferrous ion would...
have an extra hydrogen atom
have a charge of 4+
have a charge of 2+
Have an extra oxygen atom
9
Which element forms an ion with a charge of 1+
calcium
oxygen
chlorine
sodium
10
The emission spectra of the elements that we studied in class was produced when
electrons remained in the same energy level
electrons were removed from the atom
electrons jumped to a higher energy level
electrons dropped to a lower energy level
11
Which piece of lab equipment would not be used when heating a solid?
tube clamp
crucible
ring stand
clay triangle
12
The highest electronegativities would be found in_____ of the periodic table
upper right
upper left
lower right
lower left
13
Which of the following statements about the transition elements is false?
they form anions
they are found in the middle of the periodic table
they are all metals
they include elements such as Fe and W
14
The number of waves that pass a point in one second is a measure of the ____
frequency
period
amplitude
wavelength
15
Cathode rays are composed of
a stream of atoms
a stream of electrons
a stream of neutrons
a stream of protons
16
Which of the following statements about the noble gases is false?
noble gases do not produce light when hit with electricity
they are found in group 8A
some compounds contain noble gases
they usually contain 8 valence electrons
17
Which of the following will not commonly form a double bond?
carbon
nitrogen
sulfur
fluorine
18
The layer of the atmosphere where clouds are found is the
stratosphere
troposphere
mesosphere
thermosphere
19
The best description of an atom according to Dalton would be to say that atoms are
a solid sphere
negative particles in a positive "sea" of charge
a positive nucleus surrounded by negative particles
a mix of positive and negative particles
20
The atomic weights on the periodic table are
the average mass of all the isotopes
the masses of the atoms not counting the isotopes
the weighted average mass of all the isotopes
the sum of the masses of all the isotopes
21
Which statement about lone pair electrons is not correct?
they take up a lot of space in the molecule
they are not involved in a bond
they do not affect the geometry of the molecule
they are also called nonbonding electrons
22
Which of the following is most likely to be absorbed by ozone?
UV-A
UV-D
UV-C
UV-B
23
The formula of the hydroxide ion is
OH-
NH4+
ClO-
H3O+
24
Which of the following symbols and descriptions is incorrect?
(l) liquid
(s) solid
(aq) dissolved in water
all are correct
25
A phase change from solid to gas is called?
deposition
vaporization
liquefaction
sublimation
26
The answer to the problem 23.56/2.8 should contain___ significant digits
6
3
2
4
27
A 9.0 cm long rod has a density of 8.94 g/cm
3
. If the rod was cut in half, the density would be
the same as before
half the original density
one fourth the original density
double the original density
28
The number 23.00 contains___ significant digits
2
3
1
4
29
Which of the following statements about the inner transition elements is false?
they are unreactive
they fill their f orbitals
they are all metals
they form cations
30
Sally Sue measures a football field and finds it is 100 yards long. Sally's measurement is
accurate
precise
reliable
qualitative
31
The type of radiation that is easiest to stop would be
alpha particles
gamma rays
x-rays
beta particles
32
Which of the following is an example of a precipitate?
the color of tea changes when a lemon is added
the temperature changes when ice melts
gas is produced when vinegar and baking soda combine
soap scum forms in a bath tub
33
Which of the following is not a common diatomic molecule?
fluorine
bromine
carbon
iodine
34
Beta particles are composed of
electrons from the higher energy levels
photons
electrons removed from the atom
electrons ejected from the nucleus
35
Under what conditions would pure water conduct electricity
only when a covalent compound dissolves in it
pure water is always an excellent electrical conductor
only when an ionic compound dissolves in it
only when heated
36
A molecule has two atoms and a set of lone pair electrons attached to the central atom.
this is tetrahedral geometry
this is linear geometry
this is trigonal planar geometry
this is bent geometry
37
Which is not an appropriate use for a beaker?
mixing two different liquids together
measuring 100 ml of a liquid
holding a powdered chemical
heating a liquid to boiling
38
Which of the following would not be found in the third energy level
s sublevel
f sublevel
p sublevel
d sublevel
39
Which of the following is an extensive property?
texture
color
mass
density
40
oxygen and sulfur both form ions with a ___ charge
1+
2+
2-
1-
41
Which of the following will not produce an ion with a charge of 2+
magnesium
copper
potassium
iron
42
Rutherford discovered that
cathode rays are composed of electrons
electrons are found in different energy levels
the nucleus has a positive charge
the nucleus contains neutrons
43
How many oxygen atoms are in a molecule of carbon monoxide
3
4
2
1
44
Which of the following is an example of a heterogeneous mixture
salt water
iced tea
grape juice
sugar water
45
Which type of electromagnetic radiation has the most energy?
ultraviolet light
microwaves
x-rays
gamma rays
46
Which of the following elements is a halogen?
helium
chlorine
barium
lithium
47
When ozone absorbs ultraviolet light, the ozone
vibrates rapidly
doubles in volume
breaks into a molecule of O2 and an O atom
actually reflects the light back into space
48
The independent variable is the variable that
is changed by the experimenter
is measured by the experimenter
is held constant by the experimenter
is used to compare the effectiveness of the treatment
49
Sodium atoms and chlorine gas combine to produce sodium chloride. This is an example of
a synthesis reaction
a single replacement reaction
a combustion reaction
a double replacement reaction
50
Elements that form anions would be found _________ on the periodic table
on the staircase line
to the left of the staircase line
on the left half
to the right of the staircase line
