Title: Chapter 2: Atoms, Molecules, and Ions
Course: Test

Q: Structural isomers are considered molecules with the same ____________.
- kinds and number of atoms but a different arrangement of these atoms
- number of electrons and protons but a different number of neutrons
- molecular formula but with a different overall charge
A: kinds and number of atoms but a different arrangement of these atoms

Q: Which of the following is not a correct element name-symbol combination?
- copper, Cu
- arsenic, Ar
- gold, Au
A: arsenic, Ar

Q: Isotopes of carbon differ with respect to the number of _________.
- protons
- neutrons
- electrons
A: neutrons

Q: Elements in group 17 are considered _____________.
- alkali Metals
- halogens
- noble Gases
A: halogens

Q: Due to periodicity, which of the following elements has chemical behavior similar to that of Oxygen?
- bromine
- sulfur
- carbon
A: sulfur

Q: Where would you expect to find a stored bottle of HCl in the laboratory?
- in the storage cabinet labeled strong bases
- in the storage cabinet labeled strong acids
- in the storage cabinet labeled solvents
A: in the storage cabinet labeled strong acids

Q: Where would you expect to find a stored bottle of NaOH in the laboratory?
- in the storage cabinet labeled strong bases
- in the storage cabinet labeled strong acids
- in the storage cabinet labeled solvents
A: in the storage cabinet labeled strong bases

Q: Which of the following would be considered a caustic base?
- HNO_3
- H_2SO_4
- NaOH
A: NaOH

Q: Elements arranged horizontally in the periodic table are in the same_____?
- group or family
- period
- column
A: period

Q: Which elements are considered noble gases?
- He, Ne, Ar
- H, N, O
- F, Cl, Br
A: He, Ne, Ar

Q: Chlorine gas is considered a _____?
- noble gas
- halogen
- chalcogen
A: halogen

Q: Oxygen gas is considered a _____?
- noble gas
- halogen
- chalcogen
A: chalcogen

Q: What is the correct formula for acetic acid?
- CH_3CO_2H
- CH_3CO_2^-
- CH_3CO_2H_2
A: CH_3CO_2H

Q: What is the correct formula for lead(II) nitrate?
- Pd(NO_3)_2
- Pb(NO_3)
- Pb(NO_3)_2
A: Pb(NO_3)_2

Q: What is the name for iron(III) chloride?
- FeCl_2
- FeCl_3
- FeCl_4
A: FeCl_3

Q: What is the correct name for the precipitate formed when mixing potassium carbonate and nickel(II) chloride?
- potassium chloride
- nickel(II) carbonate
- nickel(III) carbonate
A: nickel(II) carbonate

Q: Which of the following gases exists as a diatomic molecule?
- krypton
- hydrogen
- argon
A: hydrogen

Q: In mass spectrometry, species are separated based off their _____?
- mass-to-charge ratio
- mass
- charge
A: mass-to-charge ratio

Q: Which statement is correct about chlorine-35 and chorine-37?
- They have the same number of protons and electrons, but a different number of neutrons.
- They have a different number of protons and electrons, but the same number of neutrons.
- They have the same number of protons, but a different number of electrons and neutrons.
A: They have the same number of protons and electrons, but a different number of neutrons.

Q: What is the overall charge on a sulfate ion?
- 0
- -1
- -2
A: -2

Q: What is the overall charge on a phosphate ion?
- -2
- -3
- -1
A: -3

Q: Which of the following would be considered a corrosive acid?
- HNO_3
- NaOH
- KOH
A: HNO_3

Q: Which list of elements contains ONLY nonmetals?
- helium, carbon, gold
- sodium, chromium, copper
- phosphorus, nitrogen, oxygen
A: phosphorus, nitrogen, oxygen

Q: The formula for potassium cyanide is KCN and the formula for calcium fluoride is CaF_2. What is the formula for calcium cyanide?
- Ca_2CN
- CaCN
- Ca(CN)_2
A: Ca(CN)_2

Q: Using the periodic table, what is the atomic number of argon?
- 26.98
- 13
- 18
A: 13

Q: Which of the following is an ionic compound?
- CO
- HCl
- Na_2O
A: Na_2O

Q: Structural isomers are considered molecules with the same ____________.
- kinds and number of atoms but a different arrangement of these atoms
- number of electrons and protons but a different number of neutrons
- molecular formula but with a different overall charge
A: kinds and number of atoms but a different arrangement of these atoms

Q: The Greek philosopher Democritus phrased what word for a tiny piece of matter that cannot be divided?
- element
- atom
- electron
A: atom

Q: Who provided evidence for the existence of a nucleus in an atom?
- John Dalton
- J.J. Thomson
- Ernest Rutherford
A: Ernest Rutherford

Q: Within the nucleus, the positive charge is __________.
- concentrated in the center of an atom
- spread evenly throughout an atom
- concentrated at multiple sites in an atom
A: concentrated in the center of an atom

Q: Which statement about subatomic particles is NOT true?
- Protons and neutrons have almost the same mass.
- Protons and electrons have opposite charges.
- Protons and neutrons have the same charge
A: Protons and neutrons have the same charge

Q: The number of protons in one atom of an element is that element’s __________.
- mass number
- atomic mass
- atomic number
A: atomic number

Q: To calculate the number of neutrons in an atom, you would subtract
- mass number from atomic number
- atomic number from mass number
- atomic number from electron number
A: atomic number from mass number

Q: Which of the following is not a correct element name-symbol combination?
- copper, Cu
- arsenic, Ar
- gold, Au
A: arsenic, Ar

Q: Isotopes of carbon differ with respect to the number of _________.
- protons
- neutrons
- electrons
A: neutrons

Q: The fact that LiBr is 7.99% lithium and 92.01% bromine by mass regardless of its origin is an example of _____.
- law of definite proportions
- law of conservation of mass
- Dalton’s atomic theory
A: law of definite proportions

Q: Which of the following elements form +2 ions?
- strontium, magnesium, calcium
- lithium, sodium, potassium
- sodium, magnesium, aluminum
A: strontium, magnesium, calcium

Q: Which of the following elements form +1 ions?
- strontium, magnesium, calcium
- lithium, sodium, potassium
- sodium, magnesium, aluminum
A: lithium, sodium, potassium

Q: How many neutrons are in carbon-12?
- 6
- 7
- 8
A: 6

Q: How many neutrons are in chlorine-37?
- 18
- 20
- 18.5
A: 20

Q: Identify the chalcogen that has 18 neutrons in the nucleus.
- sulfur-32
- sulfur-33
- sulfur-34
A: sulfur-34

Q: The chemical symbol for cobalt is _____.
- Co
- cO
- CO
A: Co

Q: What is the chemical symbol for manganese?
- Mn
- Mg
- mn
A: Mn

Q: Which element is represented by the chemical symbol Th?
- thallium
- thorium
- tantalum
A: thorium

Q: Which element is represented by the chemical symbol Tl?
- tantalum
- thallium
- thorium
A: thallium

Q: What is an anion?
- An anion is defined as an atom that has lost electrons and forms a negative charge.
- An anion is defined as an atom that has gained electrons and forms a negative charge.
- An anion is defined as an atom that has gained electrons and forms a positive charge.
A: An anion is defined as an atom that has gained electrons and forms a negative charge.

Q: What is a cation?
- A cation is defined as an atom that has lost electrons and forms a positive charge.
- A cation is defined as an atom that has gained electrons and forms a negative charge.
- A cation is defined as an atom that has gained electrons and forms a positive charge.
A: A cation is defined as an atom that has lost electrons and forms a positive charge.

Q: Hafnium atom is located in which block on the periodic table?
- p-block
- d-block
- f-block
A: d-block

Q: Lanthanum atom is located in which block on the periodic table?
- p-block
- d-block
- f-block
A: f-block

Q: Determine the formula for copper(II) nitrate.
- Cu_2NO_3
- CuNO_3
- Cu(NO_3)_2
A: Cu(NO_3)_2

Q: What is the name of Fe_2O_3?
- iron(II) oxide
- iron(III) oxide
- iron(IV) oxide
A: iron(III) oxide

Q: What is the correct formula for cobalt(III) chloride?
- CoCl_2
- CoCl_3
- Co_3Cl
A: CoCl_3

Q: What is the correct formula for iodine monochloride?
- ICl_2
- I_2Cl
- ICl
A: ICl