MS-PS1-5

Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.

 
13 Lesson(s)
   

What is Conservation of Matter?

6th Grade Science » Unit: Chemistry and Cooking
6th Grade Science » Unit: Chemistry and Cooking
Melodie Brewer
Scottsdale, AZ
Environment: Suburban
 
Big Idea:

In a chemical process, the atoms that make up the original substances are not created or destroyed, but rather regrouped into different molecules. The total number of each atom is conserved, or remains constant.

 
Favorites (44)
 
Resources (20)
 
Reflections (1)
molecules
   

Polymers and Physical Properties

7th Grade Science » Unit: Physical Properties: Molecular Arrangement and Phase Changes
7th Grade Science » Unit: Physical Properties: Molecular Arrangement and Phase Changes
Leigh Roehm
Saline, MI
Environment: Suburban
 
Big Idea:

Students explore physical and chemical properties of polymers as they make slime, experiment with insta-snow polymer, and stick a skewer through a balloon without it popping!

 
Favorites (25)
 
Resources (27)
 
Reflections (1)
balloon lesson
   

Conservation of Mass Investigation

6th Grade Science » Unit: Physical and Chemical Changes
6th Grade Science » Unit: Physical and Chemical Changes
Erin Greenwood
Boulder, CO
Environment: Suburban
 
Big Idea:

We have the power to change matter but not to create or destroy it. This investigation helps students explore this fundamental law.

 
Favorites (20)
 
Resources (19)
 
Reflections (1)
balanced equation
   

Once You Pop, You Can't Stop! Lab Rotation

7th Grade Science » Unit: Chemical Properties and Reactions
7th Grade Science » Unit: Chemical Properties and Reactions
Leigh Roehm
Saline, MI
Environment: Suburban
 
Big Idea:

The lab stations that focus on chemical reactions and conservation include using a battery to light steel wool on fire, forming a green precipitate by mixing two clear solutions, "magically" lighting the end of a skewer on fire, and more!

 
Favorites (34)
 
Resources (60)
lesson
   

Measurement: Mass

6th Grade Science » Unit: Measuring Matter
6th Grade Science » Unit: Measuring Matter
Erin Greenwood
Boulder, CO
Environment: Suburban
 
Big Idea:

The concept of mass is fundamental to identifying and describing matter. Students building a beginning understanding of mass by exploring the concept through words, diagrams and measurements.

 
Favorites (28)
 
Resources (20)
 
Reflections (1)
mass
   

Balancing Chemical Equations

8th Grade Science » Unit: Chemical Reactions
8th Grade Science » Unit: Chemical Reactions
Sean Gillette
Apple Valley, CA
Environment: Rural
 
Big Idea:

Atom are never created or destroyed in chemical reactions, they are simply rearranged.

 
Favorites (10)
 
Resources (14)
 
Reflections (1)
balancing equations cover photo
   

Balancing Equations

8th Grade Science » Unit: Chemistry
8th Grade Science » Unit: Chemistry
Jennifer Smith
Monticello, IL
Environment: Rural
 
Big Idea:

In this differentiated lesson, students review key concepts regarding the Law of Conservation of Mass and use manipulatives and technology to assist in balancing equations.

Standards:
 
Favorites (20)
 
Resources (10)
chem pic
   

Decomposing Sucrose

7th Grade Science » Unit: Chemistry
7th Grade Science » Unit: Chemistry
Deborah Gaff
Hope, IN
Environment: Rural
 
Big Idea:

Sugar is carbon and water?

 
Favorites (28)
 
Resources (14)
 
Reflections (1)
decomposingsucrose1
   

Hydrogen Balloon Explosion Demonstration

8th Grade Science » Unit: Chemical Reactions
8th Grade Science » Unit: Chemical Reactions
Sean Gillette
Apple Valley, CA
Environment: Rural
 
Big Idea:

What better way to observe the breaking and forming of chemical bonds than with an explosive hydrogen balloon.

Standards:
 
Favorites (5)
 
Resources (13)
 
Reflections (1)
h2 explosion photo
   

Bohr and Balance - a Review

8th Grade Science » Unit: Chemistry
8th Grade Science » Unit: Chemistry
Jennifer Smith
Monticello, IL
Environment: Rural
 
Big Idea:

This lesson provides students with the opportunity to receive guided instruction and work independently on balancing equations and drawing Bohr models.

 
Favorites (3)
 
Resources (10)
 
Reflections (1)
   

Mixtures: Characteristic Properties - Pre-requisite

7th Grade Science » Unit: Mixtures: Characteristic Properties
7th Grade Science » Unit: Mixtures: Characteristic Properties
Andrea Pless
Wheat Ridge, CO
Environment: Suburban
 
Big Idea:

Matter can change shape (volume) but not amount (mass).

 
Favorites (1)
 
Resources (32)
 
Reflections (1)
melting ice cube
   

Decomposing Hydrogen Peroxide

7th Grade Science » Unit: Chemistry
7th Grade Science » Unit: Chemistry
Deborah Gaff
Hope, IN
Environment: Rural
 
Big Idea:

How is a chemical catalyst like an umpire?

 
Favorites (6)
 
Resources (11)
 
Reflections (1)
h2o2
   

Decomposing Copper Sulfate Pentahydrate

7th Grade Science » Unit: Chemistry
7th Grade Science » Unit: Chemistry
Deborah Gaff
Hope, IN
Environment: Rural
 
Big Idea:

Explaining our observations when molecules decompose.

 
Favorites (3)
 
Resources (13)
 
Reflections (1)
bluecoppersulfatecrystals
Next Gen Science
 
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