1. Semester 1 Exam Topics

2. Math (Chapter 2) Graphing (IV vs DV; DRY MIX) Scientific Notation
Significant Digits
SI Units and the Metric System
Density
Dimensional Analysis (Unit Conversions)
Measurement (use the right equipment and be able to read it)
Accuracy vs precison
Percent error

3. Math (Chapter 2) Can you? Convert 3.55 L into mL? Given 0.004570 g
Identify the number of sig figs
Express it in scientific notation
Name common SI units and describe what they are used for
When I balanced my checkbook, I had a balance of $125. According to the bank my balance is $115. What’s the percent error in my account balance?
What’s the difference between accuracy and precision?
A substance has a density of 0.75 g/mL. You have 1.5 g of the substance? What is its volume?

4. Intro concepts (Chapter 3)
States of matter (properties, particle arrangements)
Forms of matter
Pure substances vs mixtures
Elements vs compounds
Homogeneous mixtures (solutions) vs heterogeneous
Separations (distillation, filtration, chromatography)
Safety in the lab
Physical vs Chemical Properties
Intensive physical properties vs. Extensive physical properties
Physical vs. Chemical Changes
Percent composition

5. Basic Atomic Structure (Chapter 4)
What are the subatomic particles (locations, relative charges, relative mass)?
What experiments led to their discovery/ characterization?
What atomic models arose from these experiments
What were contributions of Democritus? Dalton? Thomson? Rutherford? Chadwick?
How do ions form?
Cations vs. anions
What are isotopes?
Average atomic mass

6. Periodic Table (Chapter 6)
Mendeleev & Moseley
Metals, Nonmetals, & Metalloids (locations on table and typical properties)
Periods vs. Groups/Families
What do families/groups have in common and why?
Blocks (s,p,d,f)
Special families and their properties (why do they have similar properties?)
Alkali metals
Alkaline earth metals
Halogens
Noble gases
Trends (MERI)
What are the structural explanation for the trends?

7. Quantum Model & Electron Configurations (Chapter 5)
Famous names
Planck, Schrodinger, Einstein, deBroglie, Pauli, Heisenberg, Bohr
Can you describe the principles, models associated with these names?
Quantum numbers (n, l, m, s)
s, p, d, f orbitals (where are they, how many of each kind)
Writing and interpreting electron configurations
Full vs. shorthand
Where are the valence electrons?
Electron filling diagrams (arrows in boxes)
Electron dot diagrams

8. Quantum Model & Electron Configurations (Chapter 5)
If n = 4
What sublevels are present?
How many total orbitals are present?
How many total electrons can be held?
Write the full and shorthand configuration for Bromine.
Put a box around the valence electrons
Draw the orbital filling diagram
Draw the Lewis dot diagram

9. Chemical Bonding (Chapters 8 & 9)
Which part of the atom is involved?
Ionic vs Covalent vs Metallic
When do they occur?
How do they differ?
Electronegativity differences and bond types (Ionic, Nonpolar Covalent, Polar Covalent)
Drawing structural formulas
VSEPR theory (name shapes)
Identifying a whole molecule as polar or nonpolar (SNAP)

10. Names, Formulas, & Oxidation(charge) #s(Chapters 8 & 9)
Recognize when a formula is ionic, acid, covalent (molecular), hydrate
Recognize your polyatomics!!
Ionic: name the cation, name the anion
Binary (nonmetal gets –ide ending)
Ternary (> 2 elements) (use polyatomic names)
Acid: Binary (hydro-stem-ic acid) vs Oxyacid (stem –ic or stem –ous)
Covalent ( use prefixes, no mono on 1st element, 2nd gets –ide ending)
Name to formula: Know when to write charges and criss-cross (ionics and acids and hydrates)
Rules for oxidation numbers and be able to find oxidation(charge) numbers for each element in a substance.