Define and apply the law of definite proportion.

Define and apply the law of multiple proportions.

Know definition of isotope, atomic number, and mass number.

Identify the charge and mass (in amu) of the three fundamental subatomic particles: protons, neutrons, and electrons.

Given the isotopic symbol of an atom or an ion, provide the atomic number, mass number, number of protons, number of neutrons and number of electrons.

Given the atomic number, mass number, number of protons, number of neutrons, and number of electrons, determine the isotopic symbol.

Explain the concept of average atomic mass of an element, including its mathematical formula, and demonstrate how to calculate it in atomic mass units (amu) using fractional abundances.

Define periodic law.

Identify the names of the families or groups found on the periodic table.

Be able to state the group number of any element on the periodic table.

Know the general characteristics of metals, nonmetals, and metalloids.

Classify the following elements into metals, nonmetals, and metalloids: Oxygen, Silicon, Iron, Chlorine, Boron, and Gold.

Be able to state the valence electrons of the main group elements.

Identify the period of a given element on the periodic table.

Distinguish/classify empirical and molecular formulas.

Determine whether a given compound is an ionic compound or a covalent compound.

Define/distinguish between molecule and formula unit.

Provide the names for the following chemical formulas, categorizing them as ions, covalent compounds, or ionic compounds. Include the names for the specified polyatomic ions: ammonium ion (NH4+), hydroxide ion (OH-), mercury(I) ion (Hg22+), sulfate ion (SO42-), perchlorate ion (ClO4-), nitrate ion (NO3-), phosphate ion (PO43-), carbonate ion (CO32-), and acetate ion (C2H3O2-).

Identify the charge of the most stable ions for the main group elements, as well as for Zn, Cd, and Ag.

Write the chemical formula for the following: ions, covalent compounds, ionic compounds (including selected polyatomic ions) based on their chemical names.

List the chemical names and formulas for both binary and ternary acids.

What is the chemical name or chemical formula for hydrates?

Identify the chemical formula or name of elements that naturally occur as diatomic molecules.