CHM1045 unit 4
Which of the following is named using the unmodified element name and adding the word "ion"?
simple cations (monatomic cations of elements of only one possible charge)
Which formula tells us the most about a molecule?
structural formula
What is the name of SnO2?
tin (IV) oxide
What is the chemical formula of the ionic compound ammonium phosphate?
(NH4)3PO4
How many carbon atoms are there in the empirical formula corresponding to C10H22O2?
5
If the empirical formula for a compound is C3H8, which of the following are possible molecular formulas? Select all that apply.
C3H8 C6H16
Cyclobutane consists of 4 atoms of carbon and 8 atoms of hydrogen. What is cyclobutane's empirical formula? Please write the empirical formula using subscripts where needed.
CH2
Based on the rules for naming oxyacids, what is the correct name for H2CO3?
Carbonic Acid (H2CO3)
Which of these is NOT a binary acid?
H2SO4- has oxygenA binary acid may consist only of hydrogen and one other element. H2SO4 has hydrogen, sulfur, and oxygen, so it can't be considered binary.
We can always determine the precise structural formula from the:
None empirical formula molecular formula molecular mass
HClO4 is called:
Perchloric acid (HClO4) is one of the strongest mineral acids.
What is the correct molecular formula for silicon tetrachloride?
SiCl4
Which is true regarding ionic compounds?
The total positive charge equals the total negative charge.
CuOH is called:
copper(I) hydroxide
Which of the following does NOT correctly pair the polyatomic ion with its formula? Select the correct answer below: cyanide, CN+ bromate, BrO−3 chlorate, ClO−3 hydroxide, OH−
cyanide, CN+
Which of the following correctly pair the polyatomic ion with its formula? Select all that apply.
cyanide, CN−chlorate, ClO−3nitrate, NO−3
N2O5 is called
dinitrogen pentoxide.
Different ions of a given element will have differing numbers of __________.
electrons
What is the name of the binary acid: HBr?
hydrobromic acid
What is the name of the binary acid: HI?
hydroiodic acid
When described as an acid, the correct name of H2S is:
hydrosulfuric acid
Which of the following correctly pairs the ion name with the ion symbol? Select the correct answer below: iodine, I− sulfite, S2− lithium cation, Li+ nitride, N−
lithium cation, Li+
The compound MgCl2 is named _____________.a) magnesium chlorineb) magnesium dichloridec) magnesium (II) chlorided) magnesium chloridee) dimagnesium chloride
magnesium chloride
When naming binary covalent compounds, the element listed first will be the one that is
more metallic
HNO2 is called?
nitrous acid,
The group that is least likely to ionize is the __________.
noble gases
Compounds that contain hydrogen, oxygen, at least one other element, and have acidic properties are known as:
oxyacids
Which element is NOT abbreviated based on an ancient name?
radium- Ra
