Unit: Chemistry Unit 2

Structure of Matter, Periodic Table

State Standards Covered:
3. Each of the more than 100 elements of matter has distinct properties and a

distinct atomic structure. All forms of matter are composed of one or more of the

elements. As a basis for understanding this concept:

a. Students know the structure of the atom and know it is composed of protons, neutrons, and electrons.

f. Students know how to use the periodic table to identify elements in simple compounds.

7. The organization of the periodic table is based on the properties of the elements and reflects the structure of atoms. As a basis for understanding this concept:

a. Students know how to identify regions corresponding to metals, nonmetals, and inert gases.

b. Students know each element has a specific number of protons in the nucleus (the atomic number) and each isotope of the element has a different but specific number of neutrons in the nucleus.

c. Students know substances can be classified by their properties, including their melting temperature, density, hardness, and thermal and electrical conductivity.

Learning Targets & Progress

Learning Targets / Activities/Resources / 1st exp. / Before
Test
8.3.a. Students know the structure of the atom and know it is composed of protons, neutrons, and electrons.
  1. Identify the parts of an atom.
/ Textbook pages 128-130 / /
  1. Describe the size of the nucleus compared to the rest of the atom.
/ Textbook pages 129 / /
  1. Identify the charges of the proton, neutron, and electron.
/ Textbook pages 128 / /
  1. Explain why an atom’s charge is electrically neutral.
/ Textbook pages 128 / /
8.3.f. Students know how to use the periodic table to identify elements in simple compounds.
  1. Draw a diagram of the electrons of an atom in their proper energy levels.
/ energy levels of electrons (demo), practice (word document) (power point file) / /
  1. Draw an electron dot diagram of an atom.
/ Textbook pages 176-179, electron dot diagrams (word document) / /
  1. Explain what valence electrons are and why they are important.
/ Textbook pages 176 / /
8.7.b. Students know each element has a specific number of protons in the nucleus (the atomic number) and each isotope of the element has a different but specific number of neutrons in the nucleus.
  1. Explain what an isotope is.
/ Textbook pages 130, isotopes (word document) / /
  1. Explain what the atomic number represents.
/ Textbook pages 129 / /
  1. Describe what happens to the atomic number when you go from left to right in the periodic table.
/ Textbook pages 133 / /
  1. Explain what the atomic mass/weight represents
/ Textbook pages 130 & 132 / /
  1. Calculate the atomic weight given the atomic number and number of neutrons.
/ Textbook pages 130, reading the periodic table (word document) / /
  1. Calculate the number of neutrons given the atomic number and the atomic mass.
/ reading the periodic table (word document) / /
  1. Use the period table to determine the number of protons, electrons, and neutrons in an atom.
/ reading the periodic table (word document) / /
8.7.a. Students know how to identify regions corresponding to metals, nonmetals, and inert gases.
  1. Identify the part of the periodic table that has the metals, metalloid, nonmetals, and inert gases.
/ Textbook pages 133-141, metal, metalloid, non-metal review, and inert gasses (PowerPoint presentation) / /
8.7.c. Students know substances can be classified by their properties, including their melting temperature, density, hardness, and thermal and electrical conductivity.
  1. Identify the characteristics of metals, metalloids, non-metals, and inert gasses.
/ Textbook pages 133-141, metal, metalloid, non-metal review, and inert gasses (PowerPoint presentation) / /
  1. Given an element, name another element that has similar properties.
/ Textbook pages 133-141 / /