CONTENT 0BJECTIVE: 5D1.00 To understand the structure of matter
INSTRUCTIONAL OBJECTIVES: The learner will:
1.01 define an atom.
1.02 define a molecule.
1.03 construct a model of a molecule.
OUTLINE OF CONTENT:
I. Molecules
A. Definition
B. Characteristics
II. Atoms
A. Definition
B. Characteristics
C. Components
1. nucleus
2. neutrons
3. protons
4. electrons
TN COMPONENT OF SCIENCE: Unifying Concepts of Science
TN GOAL:
To enable students to acquire scientific knowledge by
applying concepts, theories, principles and laws from life/environmental,
physical, and earth/space science.
TN THEME:
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.
2.1b Different models can be used to represent the same thing. The kind of model used and its complexity depends on the purpose.
BENCHMARK: Models allow us to make inferences about real world processes and events.
2.1c Models are often used to study processes that happen too slowly, too quickly, or on too small or too large a scale to observe directly.
BENCHMARK: Scale models represent real objects, events and processes. These representations may not be exact in every detail.
2.1d The scale chosen for a model determines its effectiveness.
BENCHMARK: The development of models is based on scale, representations of size, shape, volume, speed and other properties.
CLASSROOM CONNECTOR
TIME REQUIRED:
45 minutes - 1 hour
MATERIALS:
Bohr model, molecule model kit (May be found at a hobby shop or scientific supply store), multicolored gumdrops, toothpicks
SET:
Boys and girls, we will be observing models and pictures of atoms and molecules and discussing their relationships. Later, we will build models ourselves. Raise your hand when I hold up the card showing the smallest part of an element. (Hold up cards with molecule on one and atom on the other.) The class should Indicate ATOM. (If pictures aren't available, hold up word cards.)
INSTRUCTION:
An atom is the smallest part of an element that has the characteristics of that element. (Present a Bohr model and explain its parts.) A molecule is composed of atoms. If you could take a drop of water and keep breaking it down into smaller and smaller particles, finally you could not get any smaller particle of water. This particle that still has the properties of water is a MOLECULE of water. A molecule of water or of any other substance is too small to see, with a good microscope. (Use a molecular model kit to demonstrate a model of a molecule or use a filmstrip.)
CLOSURE:
Fill in the blanks of these statements that I have written on the board.
An (Atom) is the smallest part of an (Element) that has the (Characteristics) of that element. A (molecule) is the smallest part of a (Compound) that has the properties of that compound.
Construct a model of a molecule using toothpicks and gumdrops. Use a different colored gumdrop for each kind of atom. (You could divide class into groups for this.)
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