Notes Tennessee SPI Objective: Recognize that in a chemical reaction the mass of the reactants is...

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Notes Tennessee SPI Objective: Recognize that in a chemical reaction the mass of the reactants is equal to the mass of the products (Law of Conservation of Mass) Science Essential Learning Students will confirm the Law of Conservation of Mass by examining balanced chemical equations to observe that each side of the equation has the same number and type of atoms. Essential Question(s) How do I determine the number and type of atoms on each side of a chemical equation to confirm the Law of Conservation of Mass? SPI 0807.9.11 Law of Conservation of Mass Instructions 1) First click on "View" from the top-menu bar. 2) Then click on "Slide Show" from the drop-down menu. 3) Then use the right-arrow button on your keyboard to advance through this presentation.

Transcript of Notes Tennessee SPI Objective: Recognize that in a chemical reaction the mass of the reactants is...

Page 1: Notes Tennessee SPI Objective: Recognize that in a chemical reaction the mass of the reactants is equal to the mass of the products (Law of Conservation.

Notes

Tennessee SPI Objective:Recognize that in a chemical reaction the mass of the

reactants is equal to the mass of the products (Law of Conservation of Mass)

Science

Essential LearningStudents will confirm the Law of Conservation of Massby examining balanced chemical equations to observe thateach side of the equation has the same number and type ofatoms.

Essential Question(s)How do I determine the number and type of atoms on each side of a chemical equation to confirm the Law of Conservation of Mass?

SPI 0807.9.11 Law of Conservation of Mass

Instructions1) First click on "View" from the top-menu bar.2) Then click on "Slide Show" from the drop-down menu.3) Then use the right-arrow button on your keyboard to advance through this presentation.

Page 2: Notes Tennessee SPI Objective: Recognize that in a chemical reaction the mass of the reactants is equal to the mass of the products (Law of Conservation.

Notes

Key Points About All Chemical Reactions

No atoms are created or destroyed during chemical reactions

SPI 0807.9.11 Law of Conservation of Mass

You start with reactants …you end up with products

So no mass is created or destroyed

Reactants are the "ingredients" and products are what are formed during the reaction

Science

Page 3: Notes Tennessee SPI Objective: Recognize that in a chemical reaction the mass of the reactants is equal to the mass of the products (Law of Conservation.

5 key Topics You Need to KnowChemical symbolsChemical FormulasChemical EquationsSubscriptsCoefficients

Notes SPI 0807.9.11 Law of Conservation of Mass

Science

Page 4: Notes Tennessee SPI Objective: Recognize that in a chemical reaction the mass of the reactants is equal to the mass of the products (Law of Conservation.

Key Topic

Examples:

These are the symbols (letters) that represent the elements from the periodic table

Each element's chemical symbol starts with one capital letter

Notes SPI 0807.9.11 Law of Conservation of Mass

Science

Chemical symbols

H is a chemical symbol (for the element hydrogen)O is a chemical symbol (for the element oxygen)Fe is a chemical symbol (for the element iron)Na is a chemical symbol (for the element sodium)

Page 5: Notes Tennessee SPI Objective: Recognize that in a chemical reaction the mass of the reactants is equal to the mass of the products (Law of Conservation.

Key Topic

Chemical symbols combined together = chemical formulas

Example: Put the symbols H (hydrogen) and O (oxygen) together…

…and you get the formula for water… H2OExample: Put the symbols Na (sodium) and Cl (chlorine) together…

…you get the formula for sodium chloride… NaCl

Notes SPI 0807.9.11 Law of Conservation of Mass

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Chemical Formulas

Page 6: Notes Tennessee SPI Objective: Recognize that in a chemical reaction the mass of the reactants is equal to the mass of the products (Law of Conservation.

Key TopicChemical Equations

Chemical formulas combined together = chemical equations

Examples:

Equation: 2H2 + O2 2H2OEquation: 2Na + Cl2 2 NaCl

SPI 0807.9.11 Law of Conservation of Mass

ScienceNotes

Page 7: Notes Tennessee SPI Objective: Recognize that in a chemical reaction the mass of the reactants is equal to the mass of the products (Law of Conservation.

Key Topics

CO2This small number is called a subscript.It shows you the number of atoms (2 oxygen atoms)If there is no subscript present = only one atom Carbon in this example does not have a subscript. So the capital letter C represents just one atom

2CO This big number in front is called a coefficientIt tells you to multiply (2 carbon & 2 oxygen atoms)

Notes SPI 0807.9.11 Law of Conservation of Mass

Science

Subscripts and Coefficients

Page 8: Notes Tennessee SPI Objective: Recognize that in a chemical reaction the mass of the reactants is equal to the mass of the products (Law of Conservation.

Key Topics

Five examples that look similar, but are very different

CO2= one carbon atom, two oxygen atomsCO= one carbon atom, one oxygen atomCo=one cobalt atom2CO= two carbon atoms, two oxygen atoms2CO2= two carbon atoms, four oxygen atoms

Notes SPI 0807.9.11 Law of Conservation of Mass

Science

Chemical symbols and Chemical Formulas

Very Important!!!Pay close attention to the letters and numbers!

Page 9: Notes Tennessee SPI Objective: Recognize that in a chemical reaction the mass of the reactants is equal to the mass of the products (Law of Conservation.

Key TopicsChemical symbols and Chemical Formulas

CO2Is this a chemical symbol or a chemical formula?

How many total atoms does it contain?

Identify the individual atoms.

How many carbon atoms?

How many oxygen atoms?

Quick Review

Three

Carbon and Oxygen

SPI 0807.9.11 Law of Conservation of Mass

Science

One

Two

Page 10: Notes Tennessee SPI Objective: Recognize that in a chemical reaction the mass of the reactants is equal to the mass of the products (Law of Conservation.

Key TopicsChemical symbols and Chemical Formulas

C6H12O6Is this a chemical symbol or a chemical formula?

How many total atoms does it contain?

Identify the atoms.

How many carbon atoms?

How many hydrogen atoms?

How many oxygen atoms?

Quick Review

24

Carbon, hydrogen, and oxygen

SPI 0807.9.11 Law of Conservation of Mass

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Six

Twelve

Six

Page 11: Notes Tennessee SPI Objective: Recognize that in a chemical reaction the mass of the reactants is equal to the mass of the products (Law of Conservation.

Key TopicsChemical symbols & Chemical Formulas

2H2 + O2 2H2O Is this a chemical formula or a chemical equation?

How many hydrogen reactants?

How many hydrogen products?

How many oxygen reactants?

How many oxygen products?Does it demonstrate the law of conservation of mass?

Four

Quick Review

Four

Two

Two

Yes, it most certainly does!

SPI 0807.9.11 Law of Conservation of Mass

Science


Conservation Of Mass L.O: To understand that atoms are never created or destroyed therefore mass of reactants = mass of products Wednesday, October 14,

Conservation Of Mass L.O: To understand that atoms are never created or destroyed therefore mass of reactants = mass of products Wednesday, October 14,

 · Web viewThe mass of products created in a chemical reaction can be mathematically predicted from the mass of reactants consumed in the reaction. The properties of solutions depend

 · Web viewThe mass of products created in a chemical reaction can be mathematically predicted from the mass of reactants consumed in the reaction. The properties of solutions depend

Unit 6 – Chemical Reactions Chemical equations, Molar mass, Rates of reactions, Limiting reactants.

Unit 6 – Chemical Reactions Chemical equations, Molar mass, Rates of reactions, Limiting reactants.

Stoichiometry Mass Changes in Chemical Reactions Limiting reactants Percentage yield.

Stoichiometry Mass Changes in Chemical Reactions Limiting reactants Percentage yield.

SPI 0807.9.10 Reactants & Products SPI 0807.9.11 Law of Conservation of Mass Look at the formula below. Identify the reactants and products Contrast.

SPI 0807.9.10 Reactants & Products SPI 0807.9.11 Law of Conservation of Mass Look at the formula below. Identify the reactants and products Contrast.

11.3 Limiting Reactants

11.3 Limiting Reactants

SPI™ SPI™

SPI™ SPI™

STOICHIOMETRY Mass relationship of reactants and products in a chemical reaction zHydrogen gas + nitrogen gas ----> ammonia gas zQualitative: describes.

STOICHIOMETRY Mass relationship of reactants and products in a chemical reaction zHydrogen gas + nitrogen gas ----> ammonia gas zQualitative: describes.

Unit 3: Atomic Theory. Law of Conservation of Mass Mass is neither created nor destroyed during chemical or physical changes The total mass in the reactants.

Unit 3: Atomic Theory. Law of Conservation of Mass Mass is neither created nor destroyed during chemical or physical changes The total mass in the reactants.

Mass of reactants = mass products. A reactant or a … · 3.Give two examples of a reaction where a change in mass may ... Then to convert masses to moles use: Moles of H 2= 0.10/2

Mass of reactants = mass products. A reactant or a … · 3.Give two examples of a reaction where a change in mass may ... Then to convert masses to moles use: Moles of H 2= 0.10/2

Quantifying mass balance processes on the SPI

Quantifying mass balance processes on the SPI

By, sweetcutie1124 Table of Contents Chemical Reactions: The Basics Signs of a Chemical Reaction Reactants & Products Law of Conservation of mass Energy.

By, sweetcutie1124 Table of Contents Chemical Reactions: The Basics Signs of a Chemical Reaction Reactants & Products Law of Conservation of mass Energy.

Introduction Reaction stoichiometry involves the mass relationships between reactants and products in a chemical reaction. It is based on chemical equations.

Introduction Reaction stoichiometry involves the mass relationships between reactants and products in a chemical reaction. It is based on chemical equations.

Equilibrium Expression (Keq) Also called “Mass Action Expression” Also called “Mass Action Expression” Relates the concentration of products to reactants.

Equilibrium Expression (Keq) Also called “Mass Action Expression” Also called “Mass Action Expression” Relates the concentration of products to reactants.

Law of Conservation of Mass: Mass is neither created nor destroyed in a chemical reaction. Therefore in a chemical reaction, Mass of Reactants must equal.

Law of Conservation of Mass: Mass is neither created nor destroyed in a chemical reaction. Therefore in a chemical reaction, Mass of Reactants must equal.

CHEMICAL REACTIONS Chapter 4 · PDF fileChemical Reactions The study of mass ... Mass must be conserved in a chemical reaction. Total mass of reactants ... • They give the ratio

CHEMICAL REACTIONS Chapter 4 · PDF fileChemical Reactions The study of mass ... Mass must be conserved in a chemical reaction. Total mass of reactants ... • They give the ratio

Composition Stoichiometry deals with the mass relationships of elements in compounds. Reaction Stoichiometry involves the mass relationships between reactants.

Composition Stoichiometry deals with the mass relationships of elements in compounds. Reaction Stoichiometry involves the mass relationships between reactants.

Concept Presentation Limiting Reactants

Concept Presentation Limiting Reactants

Chemical Reactions & Mass Transfer - ETH Z...Mass Transfer –Chemical reactions 10-2 The reaction rate is proportional to the concentration of reactants: (2) With being the rate constant.

Chemical Reactions & Mass Transfer - ETH Z...Mass Transfer –Chemical reactions 10-2 The reaction rate is proportional to the concentration of reactants: (2) With being the rate constant.

Chemical Reactions reactants products

Chemical Reactions reactants products