Oxidation Numbers
What is the oxidation number of H in BeH2?
H is -1
Name this polyatomic ion C2H3O2 -1
Acetate
Write the formula of sodium cyanide
NaCN
What is the Greek prefix for the number 9?
Nona
Identify the following reactions
2Na + Cl2 --------- 2NaCl
PtCl2 + 2Na ---------- Pt + 2NaCl
First is synthesis or composition
Second single replacement
What is the oxidation number of Fe in FeSO4?
Fe is +2
Say formula and charge of Nitrite and Nitrate
NO2 -1
NO3 -1
K3PO3
What type of numerals use the stock system?
Roman numerals
Identify the type of reactions
2AlBr3---------------- 2Al + 3Br2
Ca (OH)2 + 2HClO3 --------------- Ca (ClO3)2 + 2H2O
First equation is decomposition
Second equation double replacement
Generally in a compound what goes first the cation or the anion?
The cation
Give formula and charge for
Hydroxide
Ammonium
OH -1
NH4 +1
Write the formula for ammonium bromide
NH4Br
What is the difference between a binary and a terciary acid.
Binary has two elements and the first is Hydrogen
Terciary has three elements: Hydrogen, Oxygen and another NM
What is flocculation?
A step in water treatment that is a synthesis reaction leading to the removal of small particles and bacteria.
What is the oxidation number of the alkaline earth metals and the halogens?
+2 and -1
Write formulas and charges for :
Perchlorate/ Chlorate/ Chlorite/ Hypochlorite
ClO4 -1
ClO3 -1
ClO2 -1
ClO -1
Write the formula and name the compound between. aluminum and flourine
AlF3 Aluminum flouride
What is a hydrate and a oxyanion?
A compound that has water molecules.
An anion that has Oxygen and other element.
Identifies all substances involved in a reaction
Shows composition of substances involved
Accounts for atoms involved in the reaction
What is the oxidation number of As in Mg3As2?
What is the oxidation number of Co in Co3 (PO4)2
As -3
Co +2
What is a polyatomic ion?
What is a covalently bonded group of atoms that carry a charge
Write the formula and name the compounds between the following elements:
Rubidium and Oxygen
Hydrogen and chlorine
Rb2O Rubidium oxide
HCl Hydrochloric acid
Pt(ClO3)2
CaSO4 . 7H2O
Calcium sulfate heptahydrate
Give definition of the following symbols
aq
double arrow (pointing to the left and to the right)
triangle on top of arrow
arrow pointing to the right
indicates substance is dissolve in water
indicates reversible reaction
indicates heat must be supplied
indicates yields or produces