Chapter 6 Lesson 2, "The Smallest Parts of Matter"

Materials:

• Worksheet, "The Smallest Parts of Matter"

Objective:

• Students will explain what an element is.
• Students will explain what an atom is.
• Students will describe how the parts of an atom are arranged.
• Students will identify some common elements.

Anticipatory Set:* Students will be shown a picture of Mona Lisa and then posed the question. What makes up this picture? Slowly zoom in closer and closer until students can identify the individual pixels. Use this sequence: Mona Lisa 1, Mona Lisa 2, Mona Lisa 3, Mona Lisa 4, Mona Lisa 5, Mona Lisa 6, Mona Lisa 7, Mona Lisa 8, Mona Lisa 9, Mona Lisa 10, Mona Lisa 11, Mona Lisa 12,

Do the same thing with a piece of paper. Cut it in half for the students. Then cut it again, (ask the students how many times we can cut it) and again until it is so small you can't cut it anymore. Ask the students what would be the smallest thing you could cut the paper into. Explain to the students the organization levels of the paper. The paper is made of wood which is a compound. We will explain compound tomorrow. The compound is made of different kinds of elements. Define element. Show this picture of an element. The elements then are made atoms that all look alike, explain atoms, show this individual carbon atom. Each atom is made of three parts. Protons, Neutrons, and electrons. Parts of an Atom

Teacher Input:*

Have the students look at the periodic table on Page 372-373 while you show this one. There is a lot of information given about each element in the periodic table. Explain what the different numbers mean by showing this diagram of a element symbol and have them write this down on a piece of paper. They will have to refer to it in a minute. Have the students use the periodic table to guess what element you are going to show them. Use several pictures of different kinds of elements. The students are going to get to guess which element you are showing, tell its symbol, and tell the number of protons in the nucleus. They will need the periodic table from the book because this one will disappear. Each elements will contain many atoms of the same same element. Here they are:

Guided Practice:* Students will answer the questions on Page 140 with the teacher

Independent Practice:* Students will complete the worksheet, The Smallest Parts of Matter.

Check for Understanding:* Students will complete the quiz over this section, 06-02, "The Smallest Parts of Matter"

Duration:

30 minutes + 10-15 for Independent Practice (Could be longer if taken for homework).

Alaska Content Standards Addressed in this lesson:

• SCI A-1 Students will understand models describing the nature of molecules, atoms, and sub-atomic particles and the relation of the models to the structure and behavior of matter (Structure of Matter);
• SCI A-2 Students will understand the physical, chemical, and nuclear changes and interactions that result in observable changes in the properties of matter (Changes and Interactions of Matter);

• SCI A-15 Students will use science to understand and describe the local environment (Local Knowledge);