CONCEPT: All matter is made up of atoms in constant motion.
CONTENT OBJECTIVE: 3D1.00 To understand the basic components of matter
INSTRUCTIONAL OBJECTIVES: The learner will:
1.01 classify matter as liquid, solid, or gas.
1.02 define an atom.
1.03 define a molecule.
OUTLINE OF CONTENT:
I. Define matter as liquid, solid, or gas
II. Define an atom
III. Define a molecule
TN COMPONENT OF SCIENCE: Unifying Concepts of Science
To enable students to acquire scientific knowledge by applying concepts, theories, principles and laws from life/environmental, physical, and earth/space science.
2.1 SCALE AND MODEL - The development of models provides a conceptual bridge between the concrete and the abstract, while the use of scales allows for a comparison of differences in magnitude between the model and the desired form.
TN STANDARD(S): The learner will understand that:
2.1a A model is a representation used to simplify complex phenomena.
BENCHMARK: Models are developed to represent structures or concepts. These models may be manipulated for simplified analysis of complex ideas.
Colored beads and sticks, or toothpicks and gumdrops
Today we will define an atom and a molecule. What can you make with bricks? (Buildings, houses) What can you build with rocks? (Stone wall) Today we'll learn how atoms make up molecules. Molecules make up matter.
Close your eyes. When I count to three, open them. What do you see? (people, tables, etc.) The things you just named are all matter. There are things you can't see. They are also matter. (To help third graders understand the concept of atoms, make a model to demonstrate.) Everything in the world is either solid, liquid or gas. An atom is the smallest part of something. A molecule is made up of atoms. We know how atoms look from pictures. Today we will use colored beads and sticks to make an atom. The beads will be the molecules and the sticks will be the bonds. Atoms join to form small particles of matter like bricks make up buildings and rocks make up a stone wall. Atoms join to form small particles of matter. Salt is made of two different atoms. You will need to join several colored beads together to form different models. Then, look at the models that have been created.
ACTIVE PARTICIPATION: Suggested atomic models:
NaCL - Sodium chloride (salt)
H2O - Water
CO2 - Carbon dioxide
(Teacher directs as each child constructs his/her own models. Students will then match their models with the actual item. Which of the models represents a solid ? a liquid? a gas?
Today, we have defined an atom and a molecule. Draw a model of a molecule. How does an atom compare to a molecule? (Write your answer under your picture of the molecule.)
A chemist is a scientist who studies the composition of matter and the changes that different forms of matter may go through. Louis Pasteur worked in a chemistry lab studying chemical crystals. He later made some important discoveries. The process "pasteurization" used on milk was developed by him. This process kills tiny organisms, called bacteria, that would cause the milk to sour.
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