Unit 4: Atoms & Elements

In this unit we will take a historical tour and review the experiments and models that lead to our current understanding of atoms. We will look at how atoms vary and how chemists describe atoms and their variations.

Objectives:

  1. I know the true shape of the periodic table and that it is organized in groups and periods.

  2. I know the location of the following on the periodic table:

    - elements with different states of matter

    - naturally occurring and man-made elements

    - representative and transition elements

    - metals, metalloids, and nonmetals

    - subgroups of metals and nonmetals

  3. I know the location and properties of the three subatomic particles within an atom.

  4. I know how the numbers of subatomic particles are described with atomic number, mass number, and charge.

  5. I know the history of atomic models.

  6. I know what isotopes are.

  7. I know the difference between atomic mass, mass number, and average atomic mass.

  8. I know how to calculate the average atomic mass of an element.

Resources:

Objectives 1 & 2

I know the true shape of the periodic table and that it is organized in groups and periods.

I know the location of the following on the periodic table: elements with different states

of matter, naturally occurring and man-made elements, representative and transition

elements, metals, metalloids, and nonmetals, subgroups of metals and nonmetals.

Objectives 3 & 4

I know the location and properties of the three subatomic particles within an atom.

I know how the numbers of subatomic particles are described with atomic number,

mass number, and charge.

Objective 5

I know the history of atomic models.

Objectives 6, 7, & 8

I know what isotopes are.

I know the difference between atomic mass, mass number, and average atomic mass.

I know how to calculate the average atomic mass of an element.

Read Chapter 4.3

Read Chapters 4.1 and 4.2

Read Chapters 4.3 and 4.4

Read Chapter 4.5