8th Grade Science Guide

8.1: Chemistry 3 Dimensions & Progressions

Unit 2

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. ● Diagrams to support the modeling ● LabSheet

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 with chemical reactions. See how many products reactants. Play a game to test your understanding of reactants, products and leftovers. Can you get a perfect score on each level? you can make with different amounts of

● PHeT Simulation

new chemical and physical properties.