Chemistry Spring 2015 Midterm Review Topics
Draw the correct Lewis structure for a molecule of the compound to determine the number and type of bonds (single, double,
triple).
Determine when pairs of atomic symbols represent isotopes.
The mass of the atom is calculated by the sum of the number of protons and neutrons
Know how to determine the molar mass of any substance.
Know the types of reaction represented by any equation - either a combustion, a synthesis, a decomposition, single
displacement, or double displacement.
Know the octet rule.
Convert from particles to moles using Avogadro’s number; convert from grams to moles using the atomic mass found on the
Periodic Table.
Compare ionic compounds with covalent compounds – physical properties.
Know the types of pairs of atoms that will form covalent bonds.
Balance chemical equations. From balanced equations, find the mole ratio for the reactants and products.
Know what happens when electrons move from an excited state to a ground state.
Non-polar covalent vs. polar covalent vs. ionic bonds
Complete STOICHIOMETRY problems involving mass (g) or moles (mol), including limiting reactants.
In reactions to form ionic compounds, nonmetals generally gain electrons and form an anion.
In a crystal of an ionic compound, each cation is surrounded by anions – see NaCl in textbook.
Identify elements by the number of protons. Protons, protons, protons…
Know the best reason that the atomic radius generally increases down a group in the periodic table is due to the increased
number of electron energy levels.
Naming covalent compounds. Naming ionic compounds.
Finding the density of a given mass and volume.
Know the difference between physical and chemical change.
Know how to find how many valence electrons are in different atoms?
Find the order of increasing electronegativity of a series of given elements.
Find the volume of an object you place in a graduated cylinder.
How many atoms are in a mole of an element? A mole of a compound?
Determine the number of neutrons in an isotope of an element by its name or symbol.
Find the Period of the periodic table that an element is based on its electron configuration (Noble Gas configuration).
Know a chemical equation is balanced when the same number of each kind of atom appears in the reactants and in the products.
Know a fission reaction vs. a fusion reaction? What do the reactions look like?
Balancing and writing nuclear decay equations.
Converting grams (g) to kilograms (kg)
The law of conservation of mass, the total mass of the reacting substances is what?
What charge does an electron have? A proton? A neutron?
Determine the correct number of significant figures from the measured quantities in a problem.
A mole is a mole is a mole.
Properties and location on the periodic table of the noble gases. the alkali metals, alkaline earth metals, halogens, non-metals,
metals, mettaloids.
Consider the difference between homogeneous, heterogeneous, mixture, compound, and element.
What happens during radioactive decay to the nucleus?
Know which particles are mostly responsible for the chemical properties of the elements.
Solid vs. liquid vs. gas in regard to volume and shape.
Describe the formation of an ion and an ionic compound.
Densities of different elements are different!
Identify the correct electron configuration for any element on the periodic table.
Find the molar mass of an element. Of a compound.
Number atoms are there in one formula unit of a chemical formula.
Know that atoms share electrons to get to the magic number 8, which fulfills the octet rule, which makes it stable.
Know the penetrating ability of the following types of radiation – gamma rays, beta particles, alpha particles?
Know the difference between solutions, colloids, and suspensions.
Know the definition and unit of molarity, and how to solve molarity problems.
Know why certain liquids are immiscible.
Know the assumptions of the Kinetic Molecular Theory
Know how to use the Ideal and Combined Gas Laws
.