You are here

Lesson Plan

Properties of materials: density, stickiness, elasticity, foaming

Summary: 
Introduction of observing molecule movement, and watching their movement in warm and cold water. Investigate properties of molecules from a selection of activities. Discuss properties at the molecular level where possible.
Science content (2016 curriculum): 
Chemistry: States of Matter, Properties of Materials (K-7)
Chemistry: Atoms, Molecules (3-7)
Procedure: 

First, watch the motion of molecules, by looking at fat droplets in milk being bumped by them.

Watch how molecules move faster and slower in cold and warm water respectively.

Experiment with density and buoyancy with Directed challenge 2, then discuss in terms of how closely packed the molecules are in solids, liquids and gases.

Make glues from household materials, and understand their molecular nature.

Classify common materials by how rigid, elastic and malleable they are, and discuss differences at the molecular level.

Test materials for how well they make foam in water, then discuss the molecular nature of foaming molecules.

Notes: 

isas did Brownian motion, Warm and cold water, Glue followed with additional free experimentation including making ooblek, then elastic/rigid classification including home made silly putty.
Tyee did Brownian motion (as a set up on the side to visit during the lesson), then stations to rotate through: buoyancy (density of molecules), glue (stickniess), molecule model free play (molecule shapes), foam (intermediate students only).

Grades taught: 
Gr 5
Site tested: 
ingridscience afterschool
Lesson plan originally developed and delivered: 

isas