+ Chapter 8: Lesson 2 Chemical Equations. + Learning Objectives Today’s Objective: SWBAT: Distinguish among elements, compounds, and molecules.

Slides:

Advertisements

Similar presentations

Chemical Formulas & Equations. Molecule A combination of two or more atoms bonded together.

Advertisements

Chemical Formulas & Equations 8 th Grade Science 2010 H 2 O NaCl CO 2 2H 2 + O 2 = 2H 2 O.

Chemical formulae and chemical equations

Chemical Formulas and Equations

Molecules and Compounds. Compound Formed from 2 or more elements in a specific proportion When combined, new properties are created They contain 2 or.

Chemical Reactions By Mr Hem. Compound Ions Ammonium NH 4 1+ Hydrogen Carbonate NCO 3 1- Hydroxide OH 1- Nitrate NO 3 1- Carbonate CO 3 2- Sulfate SO.

Elements & Compounds Notes TEKS: (6.5) Matter and energy. The students knows the differences between elements and compounds Differentiate between elements.

SNC 1D1 – Putting Atoms Together (Synthesis) Molecules most substances are not made up of individual atoms. they are made up of molecules. a molecule is.

Chemical Formulas and Equations H 2 O NaCl CO 2 2H 2 + O 2 = 2H 2 O.

Chapter 3.1 Chemistry of Life….  Atom – basic unit of matter It is the simplest unit of matter with its own physical and chemical properties Made up of.

Writing Chemical Equations

Elements and Compounds. What is an element? A pure substance composed of the same type of atom throughout. Cannot be broken down into simpler substances.

Chemical Reactions Equations. Chemical Equations and Reactions Law of conservation of mass – during a chemical reaction, the total mass of the reacting.

Notes – Chemical Changes Chem/HChem 2013 Assign # 20 pts.

Begin. Chapter 8 Chemical Equations and Reactions.

What is a Chemical Reaction? Is burning a twig a chemical or physical change? What about dissolving salt into water? How do I know?

Unit 5 Chemical Reactions Chapter 8 Sec. 1. Objectives Indications of Chemical Reactions -How do you know a chemical reaction has happened? Chemical Equations.

1.Each element has a different symbol 2.The formula for a compound shows the elements in the compound 3.It also shows the ratio of the atoms of different.

Chemical Reactions. What is a chemical reaction? A chemical reaction is the process by which one or more substances undergo change to produce one or more.

How is Assembling a Skateboard Like Balancing a Chemical Equation? ? ? ?

DESCRIBING CHEMICAL REACTIONS. Brief Terminology Chemical Reaction What actually happens in reality. Chemical Equation Represents the reaction. (What.

Part 7: Balancing Equations

Chemical Equations. Chemical Reactions - OVERVIEW change that occurs when atoms rearrange themselves Can absorb or release energy  Heat  Light  Sound.

Chemical Reactions. Chemical Equation a short way to show chemical reactions, using symbols instead of words. C + O CO Na + Cl NaCl.

Chapter 8: Lesson 2 Chemical Equations.

Writing Chemical Formulas Balancing Chemical Equations.

Bell Ringer Bell Ringer 1. What is Sodium’s atomic mass? 2. How many protons does sodium have? 3. How many neutrons does sodium have?

Today’s Schedule Agenda: 1.Obj 3 and 5 Station Recap 2.Whiteboard Review 3.TAKS Review Booklet Essential Questions What do I need to know for the TAKS.

 Write the chemical equation and answer the following questions: CH O 2 → CO H 2 O 1. What are the numbers called and what do they tell us.

Combining Matter Chapter 3 Section 2. Compounds Compounds are substances composed of atoms of two or more elements combined chemically Represented by.

Chapter 11: Chemical Reactions Describing Chemical Reactions.

WARM UP Write a balanced chemical equation for the reaction of iron (3+) with atmospheric oxygen, producing rust (iron oxide).

Compounds Chapter 3 Section 2. Compounds A pure substance created when two or more elements chemically combine(react) Ex: Magnesium + Oxygen  Magnesium.

Molecular Compounds. Objectives Distinguish between the melting points and boiling points of molecular compounds and ionic compounds Distinguish between.

Balancing Chemical Equations. Chemical Equations Review  Chemical equations need to be balanced due to the Law of Conservation of Mass.  This law states.

Bonding, pH and Balancing Chemical Equations Quiz Know – how to balance chemical equations – ionic and covalent bonds – acids and bases – the pH scale.

Chemical Formulas and Equations. Parts of a formula Coefficient: the number in front of the symbol, which tells you how many molecules there are. Subscript:

Chemical Formula Notes TEKS 8.5D recognize that chemical formulas are used to identify substances and determine the number of atoms of each element in.

17-2 Describing Chemical Reactions. Symbol Represents one kind of an element Ex: C = carbon Ex: Na = sodium.

Describing Chemical Reactions

Chemical Equations – Outcomes

What is Matter made of? Atoms – the basic particle of which all matter, EVERYTHING, is made * A sheet of paper is approximately 10,000 atoms thick.

BALANCING CHEMICAL EQUATIONS

S2 Chemistry Equations.

Chemistry of Living Things Part 1 Basic Chemistry

Biology- The study of life and living things.

The Law of Conservation of Mass:

Chemical Names and Formulas of Compounds

Atoms, Molecules, Elements, and Compounds

Chemical Equations Reactants Products.

You have 5 minutes to update your ISN

Balancing Chemical Equations

The Law of Conservation of Mass:

Balancing Equations.

Core Chemistry Revision Questions

Conservation of Matter

Molecular Compounds.

Ch – Chemical Reactions

Putting atoms together

Chemical Reactions.

Writing and Balancing Chemical Equations

Chemistry of Life Chapter 2.

Balancing Reactions Outcome:

Reactants and products day 2

Intro to Reactions (p. 241 – 250)

Conservation of Matter

Reactants and products day 2

Chemical Balancing The Law of Conservation of Mass:

Stoichiometry Chapter 11.

Reactants and products day 2

Presentation transcript:

+ Chapter 8: Lesson 2 Chemical Equations

+ Learning Objectives Today’s Objective: SWBAT: Distinguish among elements, compounds, and molecules.

+ Elements, Compounds, and Molecules

+ Elements Consist of only 1 type of element Symbols for the elements are found on the periodic table

+ Diatomic Molecules Neutral particles in which elements share electrons Diatomic = “two” atoms These molecules have two atoms of the same element. Remember: HNOFClBrI H 2, N 2, O 2, F 2, Cl 2, Br 2, I 2

+ Compounds Compounds are composed of 2 or more different atoms. H2O: water is a covalent compound NaCl: salt is an ionic compound {Formula Unit}

+ Learning Objective - Preview Determine how a chemical reaction satisfies the law of conservation of mass.

+ Law of Conservation of Mass Mass Before = Mass After Mass of reactants = Mass of Products Figure 9 page 346

+ Word Equations: Tin + Oxygen Gas  Tin Oxide Reactants:  “produces” Product:

+ Word Equations: Tin + Oxygen Gas  Tin Oxide Reactants: tin, and oxygen gas  “produces” Product: tin oxide

+ Sodium bicarbonate + acetic acid  water + carbon dioxide + sodium acetate How many Reactants are there? Word Equations: Random Selection… be ready!

+ Sodium bicarbonate + acetic acid  water + carbon dioxide + sodium acetate How many Products are there? Word Equations: Random Selection… be ready!

+ Sodium bicarbonate + acetic acid  water + carbon dioxide + sodium acetate Product or Reactant? Acetic acid Word Equations: Random Selection… be ready!

+ Sodium bicarbonate + acetic acid  water + carbon dioxide + sodium acetate Product or Reactant? Carbon dioxide Word Equations: Random Selection… be ready!

+ Sodium bicarbonate + acetic acid  water + carbon dioxide + sodium acetate Product or Reactant? Water Word Equations: Random Selection… be ready!

+ Sodium bicarbonate + acetic acid  water + carbon dioxide + sodium acetate Product or Reactant? Sodium bicarbonate Word Equations: Random Selection… be ready!

+ Sodium bicarbonate + acetic acid  water + carbon dioxide + sodium acetate Product or Reactant? Sodium acetate Word Equations: Random Selection… be ready!

+ Word Equations: Are they good enough? Tin + Oxygen Gas  Tin Oxide Quick Write: Does this equation prove the Law of Conservation of Mass? Why or Why Not?

+ Chemical Reactions: Whiteboards 

+ C + O 2  CO 2

+ Chemical Reactions: Whiteboards H 2 O 2  H 2 O + O 2

+ Chemical Reactions: Whiteboards CH 4 + 2O 2  CO 2 + 2H 2 O

+ Chemical Reactions: Whiteboards C + O 2  CO 2