CHM 1020 - Final Exam Study Guide
2025 Questions and Answers
The quantity 0.0000064 g expressed in scientific notation is ___________. - --
Answer --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) - --Answer --compound
Which is not a mixture? - --Answer --sodium chloride
which substance is an element? - --Answer --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.) - --
Answer --12.7 cm
which one of the following is a subatomic particle located in the center of the atom
and has a positive charge? - --Answer --Proton
What are the three pillars of sustainability? - --Answer --Environmental,
social, economic
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,Oxidation and reduction of atoms involves a change in the number of
__________ in the atom. - --Answer --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? - --Answer --254 g
2.3 x 10^6 meters is the same _________________ meters. - --Answer --
2,300,000
How many protons and neutrons, respectively, are in an atom of chlorine (mass
#35)? - --Answer --Protons: 17
Neutrons: 18
For the Ionic compound NaCl, what is the charge on the sodium ion? - --
Answer --+ 1
Which of the following is a diatomic molecule: Hydrogen (H2), Aluminum (Al),
Sulfur(S8) or Carbon (C)? - --Answer --Hydrogen (H2)
What is the correct answer to the following problem (w. the correct # of
significant figures)(3..123) + 45.7 = ? - --Answer --72
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,One of the 3 pillars of sustainability, resulting in a better quality of life for all - --
Answer --Social
The Atomic # of fluorine - --Answer --9
Anything that occupies space and has mass - --Answer --matter
Tea would be an example of a - --Answer --Homogeneous Mixture
A molecule composed of a metal atom and a nonmetal atom - --Answer --
Ionic
The quantity 8.7 x10^5 g expressed in a standard decimal notation. - --
Answer --870,000 g
On a Periodic Table, the column of elements with similar properties are - --
Answer --groups
The most numerous of the elements are the - --Answer --metals
Which is not a pure substance? - --Answer --air
Which one of the following is a subatomic particle located in the center of the
atom and has no charge? - --Answer --neutrons
A computer chip was weighed and found to have a mass of 23.3040 g. How many
significant figures does this number have? - --Answer --6
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, A substance that can be broken down into two or more simpler substances only by
chemical method is called a - --Answer --compound
Which differentiates a compound from a mixture of two or more elements? - --
Answer --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?
- --Answer --9, 10, 9
What distinguishes the atoms of one element from another? - --Answer --
The number of protons
Which corresponds to the composition of the ion typically formed by magnesium
(Mg)? - --Answer --12 protons, 10 electrons, 2+ charge
How many bromide ion can combined with one ion of aluminum to form an ionic
compound? - --Answer --2
Which country is the worlds leading producer of rare earth elements? - --
Answer --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
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 4
2025 Questions and Answers
The quantity 0.0000064 g expressed in scientific notation is ___________. - --
Answer --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) - --Answer --compound
Which is not a mixture? - --Answer --sodium chloride
which substance is an element? - --Answer --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.) - --
Answer --12.7 cm
which one of the following is a subatomic particle located in the center of the atom
and has a positive charge? - --Answer --Proton
What are the three pillars of sustainability? - --Answer --Environmental,
social, economic
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
,Oxidation and reduction of atoms involves a change in the number of
__________ in the atom. - --Answer --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? - --Answer --254 g
2.3 x 10^6 meters is the same _________________ meters. - --Answer --
2,300,000
How many protons and neutrons, respectively, are in an atom of chlorine (mass
#35)? - --Answer --Protons: 17
Neutrons: 18
For the Ionic compound NaCl, what is the charge on the sodium ion? - --
Answer --+ 1
Which of the following is a diatomic molecule: Hydrogen (H2), Aluminum (Al),
Sulfur(S8) or Carbon (C)? - --Answer --Hydrogen (H2)
What is the correct answer to the following problem (w. the correct # of
significant figures)(3..123) + 45.7 = ? - --Answer --72
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
,One of the 3 pillars of sustainability, resulting in a better quality of life for all - --
Answer --Social
The Atomic # of fluorine - --Answer --9
Anything that occupies space and has mass - --Answer --matter
Tea would be an example of a - --Answer --Homogeneous Mixture
A molecule composed of a metal atom and a nonmetal atom - --Answer --
Ionic
The quantity 8.7 x10^5 g expressed in a standard decimal notation. - --
Answer --870,000 g
On a Periodic Table, the column of elements with similar properties are - --
Answer --groups
The most numerous of the elements are the - --Answer --metals
Which is not a pure substance? - --Answer --air
Which one of the following is a subatomic particle located in the center of the
atom and has no charge? - --Answer --neutrons
A computer chip was weighed and found to have a mass of 23.3040 g. How many
significant figures does this number have? - --Answer --6
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 3
, A substance that can be broken down into two or more simpler substances only by
chemical method is called a - --Answer --compound
Which differentiates a compound from a mixture of two or more elements? - --
Answer --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?
- --Answer --9, 10, 9
What distinguishes the atoms of one element from another? - --Answer --
The number of protons
Which corresponds to the composition of the ion typically formed by magnesium
(Mg)? - --Answer --12 protons, 10 electrons, 2+ charge
How many bromide ion can combined with one ion of aluminum to form an ionic
compound? - --Answer --2
Which country is the worlds leading producer of rare earth elements? - --
Answer --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
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 4
