8th Grade Science Guide

8.1: Chemistry 3 Dimensions & Progressions

Unit 2

investigation about changes in a substance’s

scripted lab to make a polymer from Elmer’s glue and borax solution. They will then select a variable to change and then plan and conduct the investigation to see how the properties further change based on that variable.

Water ● Elmers Glue Reaction Lab

properties during a chemical reaction.

8.1.3 Phenomena Introduction: Reaction in a Bag

Objective

Overview

Materials

● Students watch the video clip, or watch a demonstration of the Reaction in a Bag. Students should make observations and draw a before and after picture. Students should list any evidence of properties changes and determine if a chemical change

● Lesson Plan ● Reaction in a Bag Video

● I can analyze and

interpret data to identify patterns in changes in a substances properties to determine if a chemical reaction has occurred.

occurred and provide evidence for why they think that change occurred.

8.1.6 Phenomena: Reaction in a Closed System

Objective

Overview

Materials

● I can make observations and inferences while watching a phenomena.

● Students watch a reaction that occurs in a closed system. ● Alternative Phenomena - burning wood vs. burning steel wool. Measure mass before and after.

● Teacher Instructions

Activity: Conservation of Matter in a Physical Change

Objective

Overview

Materials