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CHM 1020 - Final Exam Study Guide With Complete Solutions
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CHM 1020 - Final Exam Study Guide WithComplete Solutions
The quantity 0.0000064 g expressed in scientific notation is ___________.
CORRECT ANSWERS 6.4 x 10^-6
A substance that can be broken down into 2 or more simpler substances only by
chemical methods is called a(n) CORRECT ANSWERS compound
Which is not a mixture? CORRECT ANSWERS sodium chloride
which substance is an element? CORRECT ANSWERS N2
The majority of new smartphones being released have displays that are at least
5.00 inches in size. What is this size in centimeters? (There are 2.54 cm in one
inch.) CORRECT ANSWERS 12.7 cm
which one of the following is a subatomic particle located in the center of the atom
and has a positive charge? CORRECT ANSWERS Proton
What are the three pillars of sustainability? CORRECT ANSWERS
Environmental, social, economic
Oxidation and reduction of atoms involves a change in the number of __________
in the atom. CORRECT ANSWERS Electrons
One of the lightest smartphones on the market today weighs 113 g. To protect your
phone, you may want to use a screen protector, which weighs 27.2 g, and a heavy
duty case which weighs 114 g. What is the total weight of the phone, screen
protector, and case? CORRECT ANSWERS 254 g
2.3 x 10^6 meters is the same _________________ meters. CORRECT
ANSWERS 2,300,000
,How many protons and neutrons, respectively, are in an atom of chlorine (mass
#35)? CORRECT ANSWERS Protons: 17
Neutrons: 18
For the Ionic compound NaCl, what is the charge on the sodium ion? CORRECT
ANSWERS + 1
Which of the following is a diatomic molecule: Hydrogen (H2), Aluminum (Al),
Sulfur(S8) or Carbon (C)? CORRECT ANSWERS Hydrogen (H2)
What is the correct answer to the following problem (w. the correct # of significant
figures)(3..123) + 45.7 = ? CORRECT ANSWERS 72
One of the 3 pillars of sustainability, resulting in a better quality of life for all
CORRECT ANSWERS Social
The Atomic # of fluorine CORRECT ANSWERS 9
Anything that occupies space and has mass CORRECT ANSWERS matter
Tea would be an example of a CORRECT ANSWERS Homogeneous Mixture
A molecule composed of a metal atom and a nonmetal atom CORRECT
ANSWERS Ionic
The quantity 8.7 x10^5 g expressed in a standard decimal notation. CORRECT
ANSWERS 870,000 g
On a Periodic Table, the column of elements with similar properties are
CORRECT ANSWERS groups
The most numerous of the elements are the CORRECT ANSWERS metals
Which is not a pure substance? CORRECT ANSWERS air
, Which one of the following is a subatomic particle located in the center of the atom
and has no charge? CORRECT ANSWERS neutrons
A computer chip was weighed and found to have a mass of 23.3040 g. How many
significant figures does this number have? CORRECT ANSWERS 6
A substance that can be broken down into two or more simpler substances only by
chemical method is called a CORRECT ANSWERS compound
Which differentiates a compound from a mixture of two or more elements?
CORRECT ANSWERS A compound does not exhibit the individual properties of
the elements of which it is composed
How many protons, neutrons, and electrons are there in a neutral atom of 19/9 F?
CORRECT ANSWERS 9, 10, 9
What distinguishes the atoms of one element from another? CORRECT
ANSWERS The number of protons
Which corresponds to the composition of the ion typically formed by magnesium
(Mg)? CORRECT ANSWERS 12 protons, 10 electrons, 2+ charge
How many bromide ion can combined with one ion of aluminum to form an ionic
compound? CORRECT ANSWERS 2
Which country is the worlds leading producer of rare earth elements? CORRECT
ANSWERS China
A recent set of advertisements has a picture of an aluminum can with an
aluminum-frame bicycle, alone with a hypothetical quote from the can that reads: "
I want to be a bike. Recycle me." The analysis of the life cycle of an item starting
with its raw materials and ending with the used item becoming the raw material for
new products is called CORRECT ANSWERS cradle-to-cradle
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