HS-PS1-7

Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.

 
59 Lesson(s)
   

Chemical Reaction Equations--An Introduction

High School Chemistry » Unit: Chemical Reactions and Stoichiometry
High School Chemistry » Unit: Chemical Reactions and Stoichiometry
Emilie Hill
Los Angeles, CA
Environment: Urban
 
Big Idea:

Starting materials in scientific processes are called "reactants" and "products" are the result; reactants that run out limit the amount of product made, leftovers are called excess.

 
Favorites (15)
 
Resources (15)
 
Reflections (1)
img 0372
   

S'more Stoichiometry

High School Chemistry » Unit: Unit 5: Stoichiometry, Chemical Reactions, and First Semester Review
High School Chemistry » Unit: Unit 5: Stoichiometry, Chemical Reactions, and First Semester Review
Rachel Meisner
Chula Vista, CA
Environment: Urban
 
Big Idea:

In chemical reactions a limiting recant causes a reaction to stop while an excess reactant is leftover. Additionally one can calculate percent yield using the experimental value from performing a lab and the theoretical value.

Standards:
 
Favorites (14)
 
Resources (17)
 
Reflections (1)
smore
   

Limiting Reactant, Theoretical Yield, and Percent Yield

High School Chemistry » Unit: Unit 5: Stoichiometry, Chemical Reactions, and First Semester Review
High School Chemistry » Unit: Unit 5: Stoichiometry, Chemical Reactions, and First Semester Review
Rachel Meisner
Chula Vista, CA
Environment: Urban
 
Big Idea:

In chemical reactions a limiting recant causes a reaction to stop, while an excess reactant is leftover. Additionally one can calculate percent yield using the experimental value from performing a lab and the theoretical value from calculations.

Standards:
 
Favorites (13)
 
Resources (21)
 
Reflections (2)
nuts bolts
   

Balloon Stoichiometry

High School Chemistry » Unit: Unit 5: Stoichiometry, Chemical Reactions, and First Semester Review
High School Chemistry » Unit: Unit 5: Stoichiometry, Chemical Reactions, and First Semester Review
Rachel Meisner
Chula Vista, CA
Environment: Urban
 
Big Idea:

Stoichiometry allows chemists to determine the theoretical yield of a product. additionally after performing an experiment chemists can then calculate percent yield using the experimental value from the lab and the theoretical value from calculations.

Standards:
 
Favorites (11)
 
Resources (25)
 
Reflections (2)
balloon lab
   

Unit 2 Review

High School Chemistry » Unit: Unit 2: Matter, Atoms, and the Periodic Table
High School Chemistry » Unit: Unit 2: Matter, Atoms, and the Periodic Table
Rachel Meisner
Chula Vista, CA
Environment: Urban
 
Big Idea:

The periodic table organizes elements based on their properties.

 
Favorites (9)
 
Resources (16)
 
Reflections (1)
pt poker
   

Semester Review Lab Day 1: Borax Ornaments

High School Chemistry » Unit: Unit 5: Stoichiometry, Chemical Reactions, and First Semester Review
High School Chemistry » Unit: Unit 5: Stoichiometry, Chemical Reactions, and First Semester Review
Rachel Meisner
Chula Vista, CA
Environment: Urban
 
Big Idea:

Borax is a compound with characteristic properties that can be investigated while also doing a semester review.

 
Favorites (9)
 
Resources (29)
 
Reflections (2)
ornaments
   

Introduction to Chemical Reactions

High School Chemistry » Unit: Chemical Reactions
High School Chemistry » Unit: Chemical Reactions
Raymond Stadt
Blue Island, IL
Environment: Urban
 
Big Idea:

Matter is conserved in chemical reactions; synthesis and decomposition are two types of chemical reactions.

 
Favorites (4)
 
Resources (15)
 
Reflections (1)
20150806 111425
   

Mole Ratios

High School Chemistry » Unit: Stoichiometry
High School Chemistry » Unit: Stoichiometry
Keith  Wright
Westhampton, MA
Environment: Suburban
 
Big Idea:

The mole provides chemists with a bridge between the microscopic and the macroscopic world. Mole ratios are used to predict the amount of product formed or reactants needed.

 
Favorites (4)
 
Resources (16)
 
Reflections (1)
mole ratio
   

Gizmo: Modeling Chemical Reactions

High School Chemistry » Unit: Unit 5 Chemical Reactions
High School Chemistry » Unit: Unit 5 Chemical Reactions
Eric Girard
Palos Heights, IL
Environment: Suburban
 
Big Idea:

Students reinforce their understanding of the conservation of mass using an ExploreLearning Gizmo.

 
Favorites (1)
 
Resources (11)
 
Reflections (1)
gizmo chem rxns
   

Balancing Chemical Reaction Equations Using Models

High School Chemistry » Unit: Chemical Reactions and Stoichiometry
High School Chemistry » Unit: Chemical Reactions and Stoichiometry
Emilie Hill
Los Angeles, CA
Environment: Urban
 
Big Idea:

Atoms are neither created nor destroyed during a chemical reaction; bonds are broken in reactants and the reactant atoms are rearranged to form products with new bonds.

 
Favorites (9)
 
Resources (14)
 
Reflections (1)
candy lab
   

Introduction to the Mole (Day 1)

High School Chemistry » Unit: Unit 6-Dimensional Analysis and The Mole
High School Chemistry » Unit: Unit 6-Dimensional Analysis and The Mole
Eric Girard
Palos Heights, IL
Environment: Suburban
 
Big Idea:

Students use popcorn kernels to develop a relationship between a counting unit (such as the mole), mass and # of particles.

Standards:
 
Favorites (5)
 
Resources (9)
popcorn pic
   

Balancing Chemical Equations

High School Chemistry » Unit: Stoichiometry
High School Chemistry » Unit: Stoichiometry
Keith  Wright
Westhampton, MA
Environment: Suburban
 
Big Idea:

Atoms are not destroyed or created in chemical reactions; they are rearranged. This means that a reaction must have the same amount of atoms of each element on both sides of a chemical equation.

 
Favorites (3)
 
Resources (16)
 
Reflections (1)
balanced chemical
   

Balancing Chemical Reactions--Part 1

High School Chemistry » Unit: Chemical Reactions and Stoichiometry
High School Chemistry » Unit: Chemical Reactions and Stoichiometry
Emilie Hill
Los Angeles, CA
Environment: Urban
 
Big Idea:

The numbers of atoms of each element on the left side of the chemical reaction equation must equal the numbers on the right side; Subscripts cannot be changed to balance.

Standards:
 
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Resources (18)
 
Reflections (2)
balancing eqn 1
   

Introduction to the Mole (Day 2)

High School Chemistry » Unit: Unit 6-Dimensional Analysis and The Mole
High School Chemistry » Unit: Unit 6-Dimensional Analysis and The Mole
Eric Girard
Palos Heights, IL
Environment: Suburban
 
Big Idea:

Students use popcorn kernels to develop a relationship between a counting unit (such as the mole), mass and # of particles.

Standards:
 
Favorites (3)
 
Resources (22)
 
Reflections (1)
popcorn pic
   

Photosynthesis, Part 2-Elodea Oxygen Bubbles Lab

High School Biology » Unit: Unit 1- Organization and Relationships
High School Biology » Unit: Unit 1- Organization and Relationships
Sharon Wilson
Jonesboro, GA
Environment: Urban
 
Big Idea:

Seeing is believing...plants release oxygen gas.

 
Favorites (7)
 
Resources (27)
 
Reflections (1)
pic
Next Gen Science
 
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