8th Grade Science Guide

8.1: Chemistry 3 Dimensions & Progressions

Unit 2

the motion of molecules in the substance by developing a model to illustrate the relationships in particle motion relationships between temperature, density, and state of matter.

string until it is hovering just above the ground. Then heat it up with a hair dryer for a minute or so. Let it go and observe what happens. Illustrate this cause and effect relationship. Continue to watch this as it cools off. ● Students will describe the use of heat energy with this whole phenomena. Why does the balloon go up? Why does it infate? What caused it to go down? They will draw and

describe details of the molecular level of what they think is happening.

Activity: So You Think Particles Can Dance?

Objective

Overview

Materials

● I can relate the amount of energy added or taken away from a substance to the motion of molecules in the substance by developing a model to illustrate the relationships in particle motion relationships between temperature, density, and state of matter.

● Students will model the behavior of molecules at different temperatures by

● Lesson Plan ● iPods, cell phones, CDs, other musical devices.

responding to types of music that make them want to move.

Activity: Changing State - Evaporation Lab

Objective

Overview

Materials

● I can relate the amount of energy added or taken away from a substance to the motion of molecules in the substance by

● Students will help design an experiment to see if adding energy (heating) affects the rate of evaporation. Students will

● Lesson Plan ● Materials for Each Group: 2 quart-sized zip plastic storage bags, hot water, room temp water, 2