Unit Overview #1 Science: PES 1,2
CHEMISTRY and the Periodic Table
Enduring Understandings addressed in this unit are:
2A1 – Characteristic properties can be used to identify matter
2A2 - Matter has characteristic properties that are related to its composition and structure.
2A3 – Characteristic properties can be used to separate matter.
2A5 – Elements have characteristic properties that change in a predictable way.
6A3 – The interdependent fields of science are connected through a particular way of knowing.
1. How do scientists identify an unknown substance? Key People: Democritus, John Dalton, JJ
2. What gives a substance its properties?
3. *How is the atom represented in the periodic table? Thompson, Ernst Rutherford, Marie Curie,
4. Why is the Periodic Table the shape that it is? Neils Bohr, Louis de Broglie, Werner
Heisenberg, Murray Gell-Mann, Lise
Meitner, Dimitri Mendeleev
* This is the mandatory writing prompt question to be graded with the expository writing rubric.
Key Terms and Concepts
1. States of Matter (s, l, g & aq) Unit Questions/Tasks
2. Physical and Chemical Properties 1. List 5 of each: solids, liquids and gases.
(Solubility, Density, Magnetism, 2. Use the periodic table to find the name, atomic number, and
Reactivity, Conductivity, Melting Point, average atomic mass of the following elements: N, Ca, Kr, W.
Boiling Point and Radioactivity) 2. Draw a diagram of a hydrogen atom.
3. Periodic Table of elements 3. Describe the nucleus of an atom.
4. Atom 4. List the names, charges, and locations of three kinds of particles
5. Nucleus that makes up an atom.
5. Determine the correct numbers of protons, neutrons and electrons for
6. Subatomic particles (proton, electron and
the following elements: K, Cl, Cu, Zr and Hg
neutron) 6. How are the isotopes of an element alike and how are they different?
7. Atomic number 7. Compare and contrast the electron cloud model to the Bohr model
8. Atomic Mass and Average Atomic Mass of an element.
9. Isotope 8. Give the period and group in which each of these elements is
10. Electron cloud found; in addition, identify as a metal, nonmetal or metalloid: He,
11. Bohr-Rutherford model Na, As, I, At, Pb, Ne, H, Au, Ag, and Al.
12. Group/ family/ column 9. Be able to interpret and graph some periodic tendencies.
13. Period/ row 10. Where are valence electrons found and what is their importance?
14. Metals, nonmetals, metalloids 11. Draw a dot diagram for the following elements: Li, Be, O, F, Al, Si,
15. Periodic Trends P and Ar.
12. Use the Periodic Table to predict the oxidation number for He, Li,
16. Valance Electrons, Dot Diagrams, C, F, Mg, Al, P and S.
The Octet Rule and Noble Gases 13. What are ions and how are they formed?
17. Oxidation Numbers 14. Explain the difference between a Cation and an Anion; show
18. Ion, Cations and Anions sodium as a Cation and show chlorine as an Anion.
Text Readings in Conceptual Physical Science Explorations:
Pages 290-303, 317-318 and 389-393
Text Readings in Physical, Chemical and Earth Science:
Pages 214-218, 268-295 and 314-315
Wasson High School Science Department