Criterion for Polymerization
Organic monomers are joined to create a long chain.
Criterion for Oxidation/Reduction of Metals
The charge of one or more metals changes.
Criterion for Combustion of Organic Molecules
An organic molecule combines with oxygen; must produce both carbon dioxide and water.
Criterion for Acid/Base Reactions
An acid (has removable H+) reacts with a base (has [OH]-, [HCO3]-, or [CO3]2-); must produce both a salt (neutral ionic compound) and water.
bicarbonate (or hydrogen carbonate)
What is it called when [OH]-, [HCO3]-, or [CO3]2- is attached to a positive ion?
What happens when you mix an acid with a base?
The solution becomes neutral
Opacity of molecules
opaque or clear
opacity of ionic compounds
often opaque but large crystals may be clear
opacityy of metals
phase at room temperature of molecules
gas, liquid, or solid; melting points vary
phase of ionic compounds at room temperature
always solid; have high melting points
phase of metals at room temperature
all are solid except mercury; extremely high melting points
Density of molecules
Water = 1 g/ml is the standard;
Organic molecules are less dense.
Density of ionic compounds
Higher than water (about 2 g/ml)
Density of metals
Very high (about 6 g/ml except for aluminum.
Density of noble gases
Very, very low because is a gas.