Questão 1
Questão
Which of the following is the definition of a gas?
Responda
-
A substance that possesses volume and assumes the shape of its container.
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A substance that possesses neither a volume or shape, but expands indefinitely.
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A substance that has volume and shape that cannot be compressed.
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A mixture of ionized gas and free-floating electrons.
Questão 2
Questão
Which of the following is an example of a solid?
Questão 3
Questão
Which of the following doesn't describes a change in water's physical properties?
Responda
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adding heat to an ice cube to cause it to melt
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adding pressure to cause water to become a gas
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breaking the bonds of h20 into hydrogen and oxygen
Questão 4
Questão
The identity of an atom is determined by [blank_start]what?[blank_end]
Questão 5
Questão
Which of the following is the definition of an element?
Responda
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A basic building block of matter
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A substance composed of two or more elements.
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A material made up of two or more different substances which are mixed, but are not combined chemically.
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A pure substance that cannot be broken down into similar substances by chemical reactions.
Questão 6
Questão
Which of the following is NOT a portion of Dalton's Atomic Theory?
Responda
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All matter is made up of tiny particles called atoms.
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All atoms of the same element are not identical to each other.
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Atoms of any one element are different from those of another element.
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Atoms combine to form molecules.
Questão 7
Questão
A compound is formed by bonding atoms together in a [blank_start]fixed ratio[blank_end].
Questão 8
Questão
Which of the following is an example of a mixture?
Responda
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h20 (water)
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NaCL
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Fluoride
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Blood
Questão 9
Questão
A [blank_start]molecule[blank_end] is a tightly bound group of atoms that act as a unit and is connected by a chemical bond.
Questão 10
Questão
Rows in the periodic table are called [blank_start]periods[blank_end]. They increase with [blank_start]atomic weight[blank_end]. Columns are called [blank_start]families[blank_end].
Responda
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periods
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atomic weight
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families
Questão 11
Questão
What is the definition of an atomic number?
Responda
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The number of protons in the nucleus.
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The sum of the number of protons and neutrons.
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The electrical charge of the atom.
Questão 12
Questão
[blank_start]Protons[blank_end] have a positive charge and are in the nucleus. Neutrons have no charge and are in the nucleus. Both protons and neutrons have equal mass. Electrons have a negative charge. Their mass is 1/1800 of the nucleus.
Responda
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Protons
-
Neutrons
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Electrons
Questão 13
Questão
How many electrons are in the 2nd orbit of an electron?
Questão 14
Questão
Which of the following is NOT an example of the "big four" elements needed for human life?
Responda
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Carbon
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Hydrogen
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Calcium
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Oxygen
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Nitrogen
Questão 15
Questão
Which element is responsible for regulating neutrality of body fluids and in energy transfer?
Responda
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Calcium
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Phosphorus
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Potassium
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Sulfur
Questão 16
Questão
About 90 percent of [blank_start]calcium[blank_end] in the body is present in bones as phosphates and carbonates.
Questão 17
Questão
Which of the following elements is NOT responsible for helping to regulate electrical balance of body fluids?
Responda
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Potassium
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Magnesium
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Chlorine
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Sodium
Questão 18
Questão
A [blank_start]cation[blank_end] is an atom that loses one or more electrons, giving it a positive charge.
Questão 19
Questão
Compounds composed of [blank_start]non-metals[blank_end] tend to be molecular.
Questão 20
Questão
Which of the following is the strongest of the electrostatic bonds?
Responda
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Ionic
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Dipole-Dipole
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Hydrogen
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London
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Covalent
Questão 21
Questão
In ionic bonding, non-metals tend to readily accept metals. [blank_start]Non-metals[blank_end] usually have 5, 6, or 7 outer electrons. [blank_start]Metals[blank_end] usually have 1, 2, or 3 electrons.
Questão 22
Questão
Which of the following are examples of ionic bonds?
Responda
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NaCL (sodium chloride)
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MgO (magnesium oxide)
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CaCL2 (calcium chloride)
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All of the above
Questão 23
Questão
What are dipole-dipole attractions?
Responda
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The attraction between positive and negative ions.
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A bond that's only possible when a hydrogen atom is directly bonded to F, O, or N
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The attraction between the opposite (partial) charges of polar molecules.
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An instantaneous dipole that is created whenever electrons in a molecule are unevenly distributed.
Questão 24
Questão
An [blank_start]ion-dipole[blank_end] bonding is a structural arrangement in which a molecule "appears" to have a more positive side or more negative side.
Questão 25
Questão
This image is an example of what kind of bond?
Responda
-
Ion-dipole
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Dipole-Dipole
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London forces
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Hydrogen bonding
Questão 26
Questão
[blank_start]Hydrogen bonding[blank_end] holds the water molecules in the liquid state and prevents the water in our bodies from exploding away into the gas state.
Questão 27
Questão
Which of the following is the weakest of the intermolecular forces?
Responda
-
Covalent
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Hydrogen
-
London
-
Dipole-dipole
Questão 28
Questão
Under the Octet Rule, all atoms want to be [blank_start]noble[blank_end] gases.
Questão 29
Questão
The [blank_start]covalent[blank_end] bond forms the foundation for organic chemistry.
Questão 30
Questão
Compounds made up of mainly one or more carbon atoms with their respective hydrogen attachments are called [blank_start]hydrocarbons[blank_end].
Questão 31
Questão
This image is an example of which gas?
Responda
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Ethane
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Alkane
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Alkenes
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Methane
Questão 32
Questão
CH3 is an example of a _________ group.
Responda
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Methyl
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Alkane
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Carbonized
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Ethane
Questão 33
Questão
This image is an example of what common hydrocarbon?
Responda
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Methane
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Ethane
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Butane
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Pentane
Questão 34
Questão
Name the following hydrocarbon configurations:
3 atoms = [blank_start]Propane[blank_end]
4 atoms = [blank_start]Butane[blank_end]
5 atoms = [blank_start]Pentane[blank_end]
6 atoms = [blank_start]Hexane[blank_end]
7 atoms = [blank_start]Heptane[blank_end]
8 atoms = [blank_start]Octane[blank_end]
9 atoms = [blank_start]Nonane[blank_end]
10 atoms = [blank_start]Decane[blank_end]
Responda
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Propane
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Butane
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Pentane
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Hexane
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Heptane
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Octane
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Nonane
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Decane
Questão 35
Questão
This image is an example of what molecule?
Responda
-
Pentane
-
Decane
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Halothane
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Isoflurane
Questão 36
Questão
Hydrocarbons with a double bond are called [blank_start]alkenes[blank_end]. Hydrocarbons with a triple bond are called [blank_start]alkynes[blank_end].
Questão 37
Questão
What are compounds with identical molecular formulas, but several alternate structures?
Responda
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Isotonic
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Isomer
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Alkane
-
Methyl group
Questão 38
Questão
There are two types of isomers: [blank_start]structural[blank_end] isomers and [blank_start]stereoisomers[blank_end].
Questão 39
Questão
Optical isomers that bend light to the right are called what?
Responda
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Dextroisomers
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Levoisomers
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Structural isomers
-
Beta isomers
Questão 40
Questão
Optical isomers that bend light to the left are called what?
Responda
-
Dextroisomers
-
Levoisomers
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Structural isomers
-
Beta isomers
Questão 41
Questão
When there is a mixture of both dextro- and levoisomers such that no bending of light occurs, the mixture is called [blank_start]racemic[blank_end].
Questão 42
Questão
Enflurane and what gas are trifluoroethyl difluoromethyl ethers? They have the same chemical formula and atomic weight, but different structure and physical characteristics.
Responda
-
Isoflurane
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Sevoflorane
-
Halothane
-
Ethane
Questão 43
Questão
What is a set of atoms bonded together in a specific way, which largely defines the chemical and physical properties of a compound?
Responda
-
Functional group
-
Methyl group
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Alkane group
-
Compound
Questão 44
Questão
Organic molecules have 2 parts: a [blank_start]carbon[blank_end] backbone and one or more [blank_start]functional[blank_end] groups.
Questão 45
Questão
Ethers are composed of two radical groups joined by an atom of what?
Responda
-
Oxygen
-
Carbon
-
Hydrogen
-
Nitrogen
Questão 46
Questão
Which of the following is NOT a member of the halogen group?
Responda
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Fluorine
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Chlorine
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Bromine
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Iodine
-
Xenon
Questão 47
Questão
A halogenated ether has an [blank_start]oxygen[blank_end] atom to make it more stable.
Questão 48
Questão
R-COO-R is the formula for what compounds?
Responda
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Ethers
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Esters
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Amides
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Amines
Questão 49
Questão
This image is an example of what organic compound?
Questão 50
Questão
This image is an example of what?
Questão 51
Questão
The generic formula -CONH2 is the formula for what?
Responda
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Ethers
-
Esters
-
Amides
-
Amines
Questão 52
Questão
The generic formula for what group is R-NH2 ?
Responda
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Amides
-
Amines
-
Ethers
-
Esters
Questão 53
Questão
This image is an example of what group?
Responda
-
Amines
-
Amides
-
Esters
-
Ethers
Questão 54
Questão
Epinephrine, norepinephrine, dopamine, phenylephrine, and dobutamine are all examples of [blank_start]amines[blank_end].
Questão 55
Questão
This image is an example of what?
Responda
-
Amine ring
-
Benzene ring
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Ether ring
-
Ester ring
Questão 56
Questão
Where is the methyl substitution and what is this molecule?
Responda
-
Methyl substitution
-
Epinephrine molecule
Questão 57
Questão
What is this molecule?
Responda
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Dopamine
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Norepinephrine
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Epinephrine
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Dobutamine