Chapter 9 Test
The ionic charge of lead, Pb, in the compound PbS2 is ____
+4
The typical ionic charge of an ion formed by an element in group 7A is ____
-1
The name of a monatomic anion ends in ____
-ide
Anion
Any atom or group of atoms with a negative charge
Cation
Any atom or group of atoms with a positive charge
The cation Fe3+ is formed when ___
an atom of iron loses three electrons
Which element when combined with chlorine would most likely form an ionic compound?
Lithium
The correct name for the N3- ion is___
Nitride ion
Acids are compounds that produce _____ ions when dissolved in water.
hydrogen
Atoms that have a positive or negative charge are called ____
ions
In a polyatomic ion, the -ite ending indicates one fewer _____ atom than the -ate ending.
Oxygen
The metals in Groups 1A, 2A, and 3A ____
lose electrons when they form ions
Monatomic ion
Consist of a single atom with a positive or negative charge
An -ite or -ate ending on the name of a compound indicates that the compound ____
Contains a polyatomic anion
Polyatomic ion
Tightly bound group of atoms that behaves as a unit and carries a charge
Law of multiple proportions
When two elements combine to form more than one compound, the different masses of one element that combine with the same mass of the other element are in the ratio of small whole numbers
Binary compound
A compound composed of two different elements
Acid
A compound that produces hydrogen ions when dissolved in water
Base
A compound that produces hydroxide ions when dissolved in water
A cation is any atom or group of atoms with ____
A positive charge
Elements of Group 4A ____
Do not commonly form ions
Law of definite proportions
In all samples of the same chemical compound, the elements are always combined in the same proportion by mass
In naming a binary molecular compound, the number of atoms of each element present in the molecule is indicated by ____
Prefixes
When naming an ion of a transition metal that has more than one common ionic charge, the numerical value of the charge is indicated by a ____
Roman numeral following the name
A molecular formula _____
Shows the number and kinds of atoms in a molecule of a compound
Binary molecular compounds are composed of two _____ elements.
non-metal