8th Grade Science Guide

8.1: Chemistry 3 Dimensions & Progressions

Unit 2

●​ I can identify a chemical reaction ●​ I can identify patterns in the data to determine if a chemical reaction took place.

●​ Students rotate to different stations to view chemical reactions. Students will follow instructions at each station and compare chemical and physical properties before and after the reaction.

●​ Student Graphic Organizer

●​ Station Instructions ●​ Baking soda, vinegar, milk, chocolate syrup, corn starch, iodine solution, calcium carbonate (sidewalk

chalk), vinegar, matches, sand, water, Cheesecloth, beakers, eye dropper,

Activity: Precipitate Forming

Objective

Overview

Materials

●​ I can identify patterns in data to determine if a chemical reaction took place.

●​ Lesson Plan

●​ Students will combine two clear colorless solutions (baking soda solution and calcium chloride solution) and see the formation of a

solid and a gas to show evidence of a chemical change.

Activity: Light Forming

Objective

Overview

Materials

●​ I can identify patterns in data to determine if a chemical reaction took place.

●​ Teacher will perform

●​ Magnesium metal, bunsen burner, tongs ●​ Nitrate salts such as cupric, sodium, aluminum, strontium, calcium, lithium, etc. ●​ Heet or alcohol with

demonstrations of 1 or more reactions that produce light such as burning Magnesium metal strips, burning a hydrocarbon, or flame tests with metals (in Heet or alcohol). Students will observe the light and explain how it is evidence that a chemical change is occurring.

containers to perform the reactions in

Activity: Energy in Reactions

Objective

Overview

Materials