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56 terms

Chem Ch 9

Test Review Sheet
STUDY
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monatomic ion
consists of a single atom with a positive or negative charge
acid
produces a hydrogen ion when dissolved in water
cation
atom or group of atoms having a positive charge
law of definite proportions
In any chemical compound, the masses of elements are always in the same proportion by mass.
polyatomic ion
tightly-bound group of atoms that behaves as a unit and carries a net charge
base
produces a hydroxide ion when dissolved in water
anion
atom or group of atoms having a negative charge
law of multiple proportions
When two elements form more than one compound, the masses of one element that combine with the same mass of the other element are in the ratio of small, whole numbers.
binary compound
compound composed of two different element
Roman numeral following the name
When naming a transition metal ion that can have more than one common ionic charge, the numerical value of the charge is indicated by a
Al ³⁺
Aluminum is a group 3A metal. Which ion does Al typically form?
Have a numerical charge that is found by subtracting 8 from the group number
The nonmetals of Groups 6A and 7A
Sulfate
Which of the following is NOT a cation?
OH⁻: hydroxide AND O²⁻:oxide
In which of the following are the symbol and name of the ion given correctly?
Chromate: CrO₄²⁻ AND Dichromate: Cr₂O₇²⁻
Which of the following correctly provides the names and formulas of polyatomic ions?
A polyatomic ion
An -ate or -ite at the end of a compound name usually indicates that the compound contains
Common names don't provide info about the chemical composition of the compound.
Why are systematic names preferred over common names?
Mn₂O₃
Which of the following compounds contains the Mn³⁺ ion?
cation on left, anion on right
How are chemical formulas of binary ionic compounds generally written?
They are composed of anions and cations.
Which of the following is true about the composition of ionic compounds?
BaI₂
Which of the following formulas represents an ionic compound?
lithium
Which element, when combined with fluorine, would most likely form an ionic compound?
Fe³⁺, O²⁻; Fe₂O₃
Which of the following show correctly an ion pair and the ionic compound the two ions form?
Ca²⁺, F⁻; CaF₂
Which of the following correctly represents an ion pair and the ionic compound the ions form?
stannic fluoride, SnF₄
In which of the following is the name and formula given correctly?
PbO
Which of the following compounds contains the lead (II) ion?
tin (IV) bromide, SnBr₄
Which set of chemical name and chemical formula for the same compound is correct?
K₂SO₃
What is the correct formula for potassium sulfite?
iron (III) phosphate, FePO₄
Which set of chemical name and chemical formula for the same compound is correct?
polyatomic ionic
What type of compound is CuSO₄?
nitrate
Which polyatomic ion forms a neutral compound when combined with a group 1A monatomic ion in a 1:1 ratio?
binary compound
Sulfur hexafluoride is an example of a
composed of two or more nonmetallic elements
Molecular compounds are usually
nonmetallic elements
Binary molecular compounds are made of two
prefixes
In naming a binary molecular compound, the number of atoms of each elements present in the molecule is indicated by
PCl₅
Which of the following is a binary molecular compound?
SO₂
Which of the following formulas represents a molecular compound?
It is a binary molecular compound.
Consider a mystery compound having the formula M₀T₀. If the compound is not an acid, if it contains only two elements, and if M is not a metal, which of the following is true about the compound?
hydrogen ions
When dissolved in water, acids produce
-ide
When naming acids, the prefix hydro- is used when the name of the acid anion ends in
H₃PO₄, phosphoric acid
Which of the following shows both the correct formula and the correct name of an acid?
sulfurous acid
What is the name of H₂SO₃?
-ous
When the name of an anion that is part of an acid ends in -ite, the acid name includes the suffix
H₂SO₃
What is the formula for sulfurous acid?
H₃PO₄
What is the formula for phosphoric acid?
H₂S
What is the formula for hydrosulfuric acid?
hydroxide ions
Which of the following are produced when a base is dissolved in water?
mass
In any chemical compound, the elements are always combined in the same proportion by
NO and NO₂
Which of the following pairs of substances best illustrates the law of multiple proportions?
SF₆
Select the formula for sulfur hexafluoride.
cobalt (II) chloride
What is the correct name for the compound CoCl₂?
It is an acid.
Suppose you encounter a chemical formula with H as the cation. What do you know about this compound immediately?
Ca(H₂PO₄)₂
What is the correct formula for calcium dihydrogen phosphate?
Oxygen is in the formula.
What does an -ite or -ate ending in a polyatomic ion mean?
5 Properties of Ionic Compounds
~non-metal and metal
~high boiling point
~high melting point
~conducts electricity when dissolved in water
~solid at room temp.
5 Properties of M. Compounds
~non-metals
~low melting point
~low boiling point
~doesn't conduct electricity when dissolved
~not solid at room temp.