Chapter 9 Note-taking Guide
Mono means ________________.
When the metals in groups 1A, 2A and 3A lose electrons, they form
_________________ with positive charges _________________ to their
They keep their names and just put the word _____________________ after it.
____________________ tend to gain electrons to form
The charge of any anion is determined by _____________________ 8 from their
Elements in group _____________ have a -1 charge and so on.
Their names will have the ending ___________________
For example, oxide, nitride, phosphide….etc
Ions of Transition Metals
The metals of groups 1B-8B form more than one _________________ with
The charges of the cations of many ________________________ metal ions must
be determined from the number of electrons lost.
To name these ions, a ____________________________ is used in parentheses
after the name of the element.
For example, Fe+3 would be called iron(III).
Some ions, called ________________________________, are composed of more
than one atom.
The names of polyatomic ions end in _________________ or
There are three other ions that have different endings ___________________,
_________________________ and _________________________.
All ions with ______________________ in them end with an –ite or an –ate.
Refer to your polyatomic table for the names and charges.
Write the name for the following:
Writing Formulas for Ionic Compounds
A __________________________________ is composed of
_____________________ elements and can be either ionic or molecular.
To name any binary ionic compound, place the __________________ first and
then the ____________________ name.
To write a formula for a binary compound, write the symbol of the cation and
then the anion.
Add whatever ___________________ are needed to
________________________ the charges.
BALANCING THE CHARGES IS IMPORTANT!!!!
Balancing Charges Using the Crossdown Method
Write the ________________ first with its ________________.
Then write the _________________ with its ________________.
The ________________ of one ion becomes the __________________ for the
You __________________ them down.
If the charges _____________________, then no numbers are needed.
Remember, each compound wants to have a ________________ charge of
Write the formulas for the following binary compounds.
Compounds with Polyatomic Ions
Write the ________________ and charge for the cation.
Write the _____________________________ and the charge.
_____________________ the charges.
Remember, they must balance to _______________.
Pretend the polyatomic ion is ________________ atom.
If more than one polyatomic ion is needed, put _____________________ around
the polyatomic formula.
REMEMBER TO REDUCE ALL FORMULAS IF THEY CAN BE REDUCED!
Write the formulas for the following:
Naming and Writing Formulas for Covalent (Molecular) Compounds
The ____________________ in the name of the binary compound tells how many
atoms of each element are present in the molecule. (see table 9.4)
The _____________________ for all the compounds is _________________.
Use the ______________________ in the name to tell you the
___________________ of each element in the formula.
Write the correct symbols and the appropriate _____________________.
Write the names/formulas of the following compounds.
Naming and Writing Formulas for Acids
An ___________________ is a compound that contains one or more
_____________________ atoms and produces hydrogen ______________ when
dissolved in water.
When the name of the anion ends in ____________________, the acid name
begins with the prefix _____________________ and has the suffix
___________________ and ends in acid.
When the anion name ends in ___________________ the acid name ends in
___________________ followed by acid.
When the anion name ends in ___________________, the acid name ends in
__________________ followed by acid.
Write the name/formula for the following acids:
The Laws of Definite and Multiple Proportions
The _________________________________________________________ states
that in any sample of a chemical compound, the _______________________ of the
elements are always in the same __________________________.
They will always _______________________ in simple
The _________________________________ states that whenever two elements
form more than one compound, they will be in simple
Symbols to remember:
_____________________ means yield or produces or makes, it’s like an =sign
_____________________ means add the compounds together
A ______________________ above the arrow, means ____________________ is
___________ means solid or precipitate, _______________ means aqueous or
dissolved in water, ________________ means gas, ______________________ means
Reactants must __________________ the products. No random compounds!!
1. Hydrogen gas and oxygen gas combine to form liquid water.
2. Methane gas (CH4) and oxygen gas combine to form carbon dioxide gas and
3. Solid Ammonium carbonate and dissolved calcium nitrate are mixed together.
Dissolved Ammonium nitrate and solid calcium carbonate are made.