8th Grade Science Guide

8.1: Chemistry 3 Dimensions & Progressions

Unit 2

gas, becomes a solution, and gives off heat) perform this lab with the students. Students are going to make various solutions and monitor the temperature changes. They will classify them as

● A second option is to

exothermic or endothermic.

Activity: Summarizing Evidence of Chemical Reactions

Objective

Overview

Materials

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

● Students will determine whether the following things show a reaction or not. Students focus on explaining whether it is or and not, and why. These are ideas for reactions to show no reaction: heated can crushed in water, ripping paper, cake in a mug, melt butter or something, food coloring inH 2 0

● This will depend on

which examples you want touse.

Activity: Electroplating or Making Alloys

Objective

Overview

Materials

● I can use valid resources to obtain information about properties of matter and evaluate how the properties of matter are to be used for particular functions in society and communicate my fndings.

● Students do a reading

● Reading, and lab sheet ● Bunsen burner, ring stand, pennies, mossy or powdered Zinc, Sodium Hydroxide, goggles, tongs

activity to learn about how alloys are made through electroplating. They then perform a lab to make a “gold” penny.