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HS-PS1-7
High School
Physical Sciences
HS-PS1
HS-PS1-7
HS-PS1-7
Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.
59 Lessons
View child tags

Chemical Reaction Equations--An Introduction
High School Chemistry
» Unit:
Chemical Reactions and Stoichiometry

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.
Standards
Emilie Hill
Urban Env.
15 Resources
18 Favorites
15 Resources
18 Favorites

Limiting Reactant, Theoretical Yield, and Percent Yield
High School Chemistry
» Unit:
Unit 5: Stoichiometry, Chemical Reactions, and First Semester Review

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
Rachel Meisner
Urban Env.
21 Resources
24 Favorites
21 Resources
24 Favorites

S'more Stoichiometry
High School Chemistry
» Unit:
Unit 5: Stoichiometry, Chemical Reactions, and First Semester Review

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
Rachel Meisner
Urban Env.
17 Resources
24 Favorites
17 Resources
24 Favorites

Balloon Stoichiometry
High School Chemistry
» Unit:
Unit 5: Stoichiometry, Chemical Reactions, and First Semester Review

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
Rachel Meisner
Urban Env.
25 Resources
18 Favorites
25 Resources
18 Favorites

Introduction to Chemical Reactions
High School Chemistry
» Unit:
Chemical Reactions

Big Idea:Matter is conserved in chemical reactions; synthesis and decomposition are two types of chemical reactions.
Standards
Raymond Stadt
Urban Env.
15 Resources
10 Favorites
15 Resources
10 Favorites

Mole Ratios
High School Chemistry
» Unit:
Stoichiometry

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.
Standards
Keith Wright
Suburban Env.
16 Resources
9 Favorites
16 Resources
9 Favorites

Gizmo: Modeling Chemical Reactions
High School Chemistry
» Unit:
Unit 5 Chemical Reactions

Big Idea:Students reinforce their understanding of the conservation of mass using an ExploreLearning Gizmo.
Standards
Eric Girard
Suburban Env.
11 Resources
2 Favorites
11 Resources
2 Favorites

Balancing Chemical Reaction Equations Using Models
High School Chemistry
» Unit:
Chemical Reactions and Stoichiometry

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.
Standards
Emilie Hill
Urban Env.
14 Resources
17 Favorites
14 Resources
17 Favorites

Balancing Chemical Equations
High School Chemistry
» Unit:
Stoichiometry

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.
Standards
Keith Wright
Suburban Env.
16 Resources
5 Favorites
16 Resources
5 Favorites

Unit 2 Review
High School Chemistry
» Unit:
Unit 2: Matter, Atoms, and the Periodic Table

Big Idea:The periodic table organizes elements based on their properties.
Standards
Rachel Meisner
Urban Env.
16 Resources
11 Favorites
16 Resources
11 Favorites

Semester Review Lab Day 1: Borax Ornaments
High School Chemistry
» Unit:
Unit 5: Stoichiometry, Chemical Reactions, and First Semester Review

Big Idea:Borax is a compound with characteristic properties that can be investigated while also doing a semester review.
Standards
Rachel Meisner
Urban Env.
29 Resources
12 Favorites
29 Resources
12 Favorites

Conservation of Mass Lab
High School Chemistry
» Unit:
Unit 5 Chemical Reactions

Big Idea:Students conduct an investigation that shows mass is conserved during the chemical reaction between sulfuric acid and steel wool (iron).
Standards
Eric Girard
Suburban Env.
17 Resources
7 Favorites
17 Resources
7 Favorites

Balancing Chemical Reactions--Part 1
High School Chemistry
» Unit:
Chemical Reactions and Stoichiometry

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
Emilie Hill
Urban Env.
18 Resources
6 Favorites
18 Resources
6 Favorites

Stoichiometry Experimental Design
High School Chemistry
» Unit:
Stoichiometry

Big Idea:Percent yield is derived by dividing the actual yield from the experiment by the theoretical yield predicted by stoichiometry.
Standards
Keith Wright
Suburban Env.
20 Resources
3 Favorites
20 Resources
3 Favorites
View All 59 Lessons
HS-PS1-1
Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.
HS-PS1-2
Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.
HS-PS1-3
Plan and conduct an investigation to gather evidence to compare the structure of substances at the bulk scale to infer the strength of electrical forces between particles.
HS-PS1-4
Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.
HS-PS1-5
Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.
HS-PS1-6
Refine the design of a chemical system by specifying a change in conditions that would produce increased amounts of products at equilibrium.
HS-PS1-7
Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.
HS-PS1-8
Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.