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