Which of the following states of matter is pictured below?
C) gas
Which of the following states of matter is portrayed by the following
description: assumes the shape of its container because it has a
definite volume but no specific shape?
A) solid
B) liquid
C) gas
B) liquid
Which one of the following is an example of a heterogeneous mixture?
A) apple juice
B) tap water
C) air
D) Italian salad dressing
D) Italian salad dressing
Which one of the following is an example of a heterogenous mixture?
A) coffee
B) water
C) sand
D) tap water
C) sand
Which one of the following is an example of a homogenous mixture?A) coffee
B) salt
C) concrete
D) iron
A) coffee
Which one of the following is an example of an element?
A) brass
B) nickel
C) bronze
D) sterling silver
B) nickel
Which one of the following is NOT an example of a compound?
A) concrete
B) rust (iron oxide)
C) carbon dioxide
D) ammonia+
A) concrete
Which one of the following would be a chemical property of a sample
of neon gas?
A) It is a gas at room temperature.
B) It is inert.
C) It is colorless.
D) It boils at -246 �C.
B) It is inert.
Which one of the following would be a physical property of glucose?
A) It is used by the body to generate energy.
B) When combined with sulfuric acid it forms carbon.
C) In its pure form, it is a white powder.
D) It can be fermented to form ethanol.
C) In its pure form, it is a white powder.
How many significant figures does the answer of 2.5 + 9.520 contain?
A) 1
B) 2
C) 3
D) 4
E) 5
C) 3
Which of the following is a chemical change?
A) cooking an egg
B) mixing oil and water
C) tearing a piece of paper
D) watching a DVD
A) cooking an egg
Which of the following is a physical change?
A) rusting of a nail
B) tearing a piece of paper
C) cooking an egg
D) burning wood
B) tearing a piece of paper
Which one of these represents a CHEMICAL change?
A) lard when heated changes to liquid
B) water disappears from a beaker in a few days at room temperature
C) sugar dissolving in water
D) milk turns sour after sitting at room temperature for a few days
E) water boils below 100�C on a mountain
D) milk turns sour after sitting at room temperature for a few days
In the process of making biofuel from corn, the corn is ground, mixed
with water, and then enzymes are added to hydrolyze the starch into
smaller sugar molecules. The fermentation produces ethanol and carbon
dioxide. In a subsequent step, a microorganism ferments the sugars
into ethanol and carbon dioxide. The ethanol is further distilled for
use as a biofuel. In this process ______ is an example of a chemical change.
A) grinding the corn
B) fermenting the starch
C) distilling the ethanol
D) mixing the corn with water
B) fermenting the starch
What is the name of the SI unit for length?
A) kilogram
B) meter
C) second
D) Kelvin
B) meter
Which of the following metric prefixes corresponds to 10�?
A) centi-
B) kilo-
C) mega-
D) micro-
E) milli-
B) kilo-
Which of the following metric prefixes corresponds to 10?�?
A) centi-
B) kilo-
C) mega-
D) micro-
E) milli-
E) milli-
Which of the following metric prefixes corresponds to 10???
A) centi-
B) kilo-
C) mega-
D) micro-
E) milli-
D) micro-
Which of the following represents an exact quantity?
A) There are 2.54 cm in an inch.
B) A man is 5 feet 10 inches tall.
C) A man weighs 200 lb.
D) It takes 15 minutes to drive to the grocery store.
E) There are 80 grams of sugar in a serving of soda.
A) There are 2.54 cm in an inch.
Which one of the following is the largest mass?
A) 7.6 � 10? mg
B) 7.6 � 10? ng
C) 7.6 � 10?� kg
D) 7.6 � 10? ?g
D) 7.6 � 10? ?g
Which one of the following is the longest length?
A) 840 m
B) 0.084 km
C) 8.4 � 10? nm
D) 8.4 � 10? ?m
A) 840 m
Which one of the following is the smallest mass?
A) 5.2 � 10?? kg
B) 0.052 g
C) 5.2 mg
D) 5.2 cg
C) 5.2 mg
You have a 100 gram sample of each of the following metals. Which
sample has the smallest volume?
A) Aluminum, d = 2.7 g/cm�
B) Gold, d = 19.3 g/cm�
C) Iron, d = 7.86 g/cm�
D) Magnesium, d = 1.74 g/cm�
E) Silver, d = 10.5 g/cm�
B) Gold, d = 19.3 g/cm�
The density of water is approximately 1 g/cm�. Which of these
substances will sink in water?
A) Liquid hydrogen, d = 0.070 g/cm�
B) Lithium, d = 0.535 g/cm�
C) Potassium, d = 0.860 g/cm�
D) Polymer resin, d = 1.03 g/cm�
D) Polymer resin, d = 1.03 g/cm�
three blocks of the same shape and size are placed in front of you.
Block A has a mass of 3.0 g, block B is 5.0 g, and block C is 10.0 g.
Which has the higher density?
A) Block A
B) Block B
C) Block C
D) All blocks have the same density.
E) There is no way to determine without the volume.
C) Block C
Vegetable oil has a density of 0.92 g/cm�. Which of these substances
would float on vegetable oil?
A) Corn syrup, d = 1.4 g/cm�
B) Mercury, d = 13.6 g/cm�
C) Aluminum, d = 2.7 g/cm�
D) Rubbing alcohol, d = 0.79 g/cm�
E) Water, d = 1.0 g/cm�
D) Rubbing alcohol, d = 0.79 g/cm�
You have a sample of each of the following five metals, with the mass
and density of each sample given. Which sample has the smallest volume?
A) Aluminum, mass = 138 g, d = 2.7 g/cm�
B) Copper, mass = 225 g, d = 8.92 g/cm�
C) Iron, mass = 235 g, d = 7.86 g/cm�
D) Magnesium, mass = 105 g, d = 1.74 g/cm�
E) Silver, mass = 215 g, d = 10.5 g/cm�
E) Silver, mass = 215 g, d = 10.5 g/cm�
A chemist encounters an unknown solid. They drop the solid into a
graduated cylinder containing water, and find the volume change is
3.20 mL. If the solid weighs 1.5 g, what is the density in g/mL of the metal?
0.47 g/mL
The answer to the calculation below with the correct number of
significant figures is
A) 46.4
B) 46.37
C) 50
D) 46
D) 46
The answer to the calculation below with the correct number of
significant figures is
A) 83.63
B) 83.6
C) 84
D) 83.628
B) 83.6
The answer to the calculation below with the correct number of
significant figures is
A) 225
B) 230
C) 225.49
D) 225.5
D) 225.5
The answer to the calculation below with the correct number of
significant figures is
A) 190
Which of the following numbers contains four significant figures?
A) 1561.0
B) 0.053
C) 0.761
D) 3.101
E) 1400
D) 3.101
How many significant figures does the number 23.070 have?
5
The number 0.01060 has ___ significant figures.
4
The number 4.0 � 10? has ___ significant figures.
2
The number 350.2 has ___ significant figures.
4
The number 6.11 � 10?� when taken out of scientific notation would be
A) 0.00611
B) 0.0611
C) 611
D) 6110
B) 0.0611
The number 875000 written in scientific notation would be
A) 8.75 � 10?
B) 8.75 � 10??
C) 8.75 � 10?
D) 8.75 � 10??
A) 8.75 � 10?
The number 9.41 � 10? when taken out of scientific notation would be
A) 9410000
B) 94100
C) 941000
D) 0.0000941
C) 941000
Jamel is to receive Cleocin 275 mg IV for 6.00 hr. The concentration
of the solution is 5.00 mg/mL. What is the volume of the solution in
milliliters that will need to be delivered?
55.0 mL
A particular medication dosage is 43.3 mg/kg of body weight. If 1.00
mL of the medication contains 50.0 mg, what is the volume in mL of the
medication a child weighing 59.0 lb. should receive?
23.2 mL
Convert 2.87 kg to grams. Use only the metric system.
2870 g.
Convert 32.1 into centimeters
81.5 cm.
Convert 0.0134L to milliliters. Use only the metric system.
13.4 mL.
Convert 5.32 � 10?? s to microseconds. Use only the metric system.
0.532 �s.
A person loses 2.70lb in two weeks. How many grams did they lose?
1220 g.
A fuel tank holds 22.3 gallons of gasoline. If the density of
gasoline is 0.8206g/mL, what is the mass in kilograms of gasoline in a
full tank?
69.3 kg.
A liquid in the lab has a density of 1.17g/cm�. What is the volume in
liters of 3.02kg of the liquid?
2.58 L.
A race car has a maximum speed of 0.104km/s. What is this speed in
miles per hour?
233 mi / hr.
Convert 26.2 kilometers to centimeters.
2.62 � 10? cm
Cam signed up to run a 15-kilometer running race. What distance in
miles will she have ran when she finishes?
9.3 miles
How much money will it cost you to drive 165.0 miles if your car gets
25.70 miles per gallon and gas costs $3.309/gallon?
21.24 $
A barrel of crude oil has a volume of 42 gallons, only approximately
45% of which is processed into gasoline. If your car achieves 35
mi/gal, and you drive 36,000 miles in one year, how many barrels of
crude oil are required to run your car for a year?
54 barrels
Which is not one of Dalton's hypotheses of atomic theory?
A) Elements are composed of atoms.
B) Compounds are composed of atoms of more than one element.
C) A chemical reaction involves the rearrangement of atoms.
D) All atoms of a given element are identical.
E) The atoms of one element are the same as atoms of another element.
E) The atoms of one element are the same as atoms of another element.
Rutherford's gold foil experiment determined that
A) neutrons are in the nucleus.
B) electrons have a negative charge.
C) most of the space in an atom is empty except for a concentrated
area called the nucleus.
D) protons and neutrons have about the same mass.
E) neutrons have no charge.
C) most of the space in an atom is empty except for a concentrated
area called the nucleus.
Which has a greater mass?
A) Electron
B) Proton
C) They have equal masses
D) Not enough information
B) Proton
The net charge on an atom of a given element changes as ______ are
added or removed.
A) neutrons
B) protons
C) electrons
D) protons and electrons
C) electrons
The element symbol for nickel is _____
A) Ni
B) N
C) Nc
D) Ne
E) Nh
A) Ni
What is the element symbol for aluminum?
A) Au
B) Am
C) Al
D) A
E) An
C) Al
What is the element symbol for fluorine?
A) Fl
B) Fu
C) Fi
D) F
E) Fe
D) F
What is the element symbol for gold?
A) Au
B) Am
C) Al
D) A
E) An
A) Au
What is the element symbol for titanium?
A) Tm
B) Ti
C) Ta
D) Tn
E) T
B) Ti
Which of the following element symbols is NOT listed with the element
it represents?
A) Co, copper
B) Sb, antimony
C) Bi, bismuth
D) K, potassium
E) Ne, neon
A) Co, copper
What element has the symbol Pb?
A) praseodymium
B) potassium
C) lead
D) phosphorus
E) polonium
C) lead
Which element has the symbol Sn?A) tin
B) scandium
C) samarium
D) lead
E) antimony
A) tin
Which of the following sets of elements and symbols is paired correctly?
A) beryllium, B
B) manganese, Mg
C) calcium, Cm
D) tungsten, W
E) lead, La
D) tungsten, W
Which of the following sets of elements and symbols is paired incorrectly?
A) lithium, Li
B) arsenic, As.
C) silver, Si
D) gallium, Ga
E) zinc, Zn
C) silver, Si
A mass spectrometer measures neon to have two masses: 20 and 22
atomic mass units. These are:
A) Isotopes
B) Ions
C) Compounds
D) None of the above
A) Isotopes
What is the mass number of zinc-69?
69
What is the atomic symbol and mass number for an atom containing 50
protons and 64 neutrons?
A) ??Sn
B) ��?Sn
C) ??Sn
D) ??GdE) ��?Gd
B) ��?Sn
Which of the following atoms has the same number of neutrons as ??Ni?
A) ??Co
B) ??Fe
C) ??Ni
D) ??Co
E) ??Cu
E) ??Cu
What is the atomic number for an element whose mass number is 78,
which contains 35 neutrons per atom?
43
There are two naturally occurring isotopes of europium, �?�Eu (151.0
amu) and �?�Eu (153.0 amu). If the atomic mass of Eu is 151.96, what
is the approximate natural abundance of �?�Eu?
C) 50%
An unknown element X has the following isotopes: ?�X (91.00%
abundant), ??X (8.00% abundant), ??X (1.00% abundant). What is the
average atomic mass in amu of X?
51.7 amu
Chlorine exists in nature as a mixture of two stable isotopes, Cl-35
and Cl-37. If the atomic mass of chlorine is given as 35.45 amu, which
of the following represents the percent abundance of Cl-37?
A) 23%
B) 77%
C) 50%
D) 0%
E) 100%
A) 23%
The ground state electron configuration of an Al atom is
A)1s�2s�2p?3s�3d�
B) 1s�2s�2p?3s�3p�
C) 1s�2s�2p?3s�3p?4s�4p�
D) 1s�2s�2p?3s�3p�
E)1s�2s�2p�
B) 1s�2s�2p?3s�3p�
Which pair of elements have the same valence electronic configuration
of np�?
A) O and Se
B) Ge and Pb
C) P and Sb
D) K and Mg
E) Al and Ga
C) P and Sb
Which of the following is the electron configuration of a neutral K atom?
A) 1s�2s�2p?3s�
B) 1s�2s�2p?3s�
C) 1s�2s�2p?3s�3p?4s�
D) 1s�2s�2p?3s�3p?4s�3d�?4p?5s�
E) 1s�2s�2p?3s�3p?4s�
E) 1s�2s�2p?3s�3p?4s�
Which of the following electron configurations is incorrect?
A) S [Ne]3s�3p?
B) Sn [Kr]5s�4d�?5p�
C) Rb [Kr]5s�
D) V [Ar]4s�3d�
E) I [Kr]5s�4d�?5p?
A) S [Ne]3s�3p?
What is the noble gas core in the electron configuration for Sb?
A) Ne
B) Ar
C) Kr
D) Xe
E) Rn
C) Kr
Which of the following is the electron configuration for Mn?
A) [Kr]4s�3d?
B) [Ar]4s�3d?
C) [Ar]3d?
D) [Ar]4s�3d?
E) [Kr]3d?
B) [Ar]4s�3d?