8th Grade Science Guide

8.1: Chemistry 3 Dimensions & Progressions

Unit 2

●​ Law of conservation of mass explained

Activity: Informational Text

Objective

Overview

Materials

●​ I can develop a model describing atoms and molecules ability to

●​ Students number

●​ Article about the law of conservation of mass in nature.

paragraphs and read the paper using a graphic organizer.

combine and recombine. (conservation of matter)

Activity: Modeling Chemical Change & Conservation of Mass

Objective

Overview

Materials

●​ I can provide evidence and describe how chemical reactions regroup atoms into different molecules with

●​ Students use M&Ms or Skittle candies to model

●​ M&Ms or Skittles matching simple

what happens to the atoms in a chemical change.

chemical and physical change equations.

●​ Lab Sheet

new chemical and physical properties.

●​

Activity: Reactants, Products, & Leftovers

Objective

Overview

Materials

●​ I can provide evidence and describe how chemical reactions regroup atoms into different molecules with

●​ Students will use a pHet simulation to model how a chemical reaction can regroup atoms into different molecules and that matter must be conserved in the process. ●​ Create your own sandwich and then see how many sandwiches you can make with different amounts of ingredients. Do the same

●​ PHeT Simulation

new chemical and physical properties.