The Language of Chemistry. Language of Chemistry  Formula: A combination of symbols that shows the ratio of elements in a compound. ex: H 2 O.

Slides:

Advertisements

Similar presentations

Warm-up Spiral Write or read over your summary for the notes on “Describing Chemical Reactions” (Pgs. 544 – 548) If you were absent, begin to write notes.

Advertisements

The Language of Chemistry

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

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

Pure Substances Mr. Skirbst Physical Science Topic 12.

reactantsproducts Depict the kind of reactants and products including their relative amounts in a reaction. 4 Al(s) + 3 O 2 (g) 2 Al 2 O 3 (s) The numbers.

17-2 Describing Chemical Reactions

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.

Chemical Reactions Notes. Chemical Reaction Definition:  When substances combine to form a new substances.

Aim CE1a What does the chemical equation for photosynthesis tell us?

–Chemical reactions occur when bonds between the outermost parts of atoms are formed or broken.

821 Identify the reactants and products of a chemical reaction.

The Language of Chemistry Matter, Symbols, Formulas & Chemical Equations.

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

Chemistry 112 Elements and Compounds. What’s the difference?  Elements are the simplest form of matter.  They have a unique set of properties  A compound.

Chemical Reactions - Describing Chemical Reactions Describing Chemical Reactions Cellular phone messages make use of symbols and abbreviations to express.

Changes of Matter Physical Change- a change that alters the appearance or form of a substance but doesn’t produce a new substance. Ex: melting a sample.

Chemical Reactions. Nature of Reactions A chemical reaction is when you create a new substance with unique physical and chemical properties.

Do Now  Please write HW in your agenda.  Please update your table of contents.  Fold and attach the notes to page 119.  Answer the entrance ticket.

 A chemical equation is a short, easy way to show a chemical reaction using symbols instead of words.  A reactant is the substance you have at the beginning.

Balancing equations Unit 2 Chemistry. Writing Chemical Equations Products: are the chemicals that are made or produced in the reaction. Reactants: are.

EQUATIONS Coefficients- 1. The big numbers in front of the compounds and/or elements in a chemical reaction. 2. Represent the number of moles of that compound.

Notes Key Points About All Chemical Reactions:  A new substance is formed NN o atoms are lost or gained during chemical reactions  atomic bonds are.

Stoichiometry – Chemical Quantities Notes. Stoichiometry Stoichiometry – Study of quantitative relationships that can be derived from chemical formulas.

When elements are chemically combined, they form compounds having properties that are different from those of the uncombined elements.

Chemical REACTIONS-Words to know! Chemical EQUATION- Chemical EQUATION- The shorthand method for representing changes that take place during a chemical.

Chemical Formula atom molecule compound ex: H 2 0, NaCl element O O 2 matter.

Section 2Chemical Reactions Describing Reactions 〉 What is a chemical equation? 〉 A chemical equation uses symbols to represent a chemical reaction and.

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

Chemical Formulas and Equations Test Review H2OH2O2H 2 + O 2  2H 2 O.

Chemical Formulas and Equations Vocab – Part 1. Element pure substances = 1 type of atom (all the same) Examples: H H 2.

Chemical Reactions: The Law of Conservation of Mass.

Describing Reactions What is a chemical equation? What is a balanced equation? How can equations be checked for balance?

Physical vs. Chemical Change How are they different?

4 – Investigate and describe the compounds formed by bonding elements. 3 – Describe why certain elements bond with others. 2 – Use the periodic table.

Chapter 6, Section 2 Describing Chemical Reactions.

Law of Conservation of Mass. causes a chemical change, which creates a new substance with new and different properties.

Notes Key Points About All Chemical Reactions:  No atoms are lost or gained during chemical reactions SPI Law of Conservation of Mass  You.

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

Chapter 6 Section 2 Notes A chemical equation is a short, easy way to show a chemical reaction. Chemical equations use chemical formulas and other symbols.

(8th) Chapter 6-2 Cornell Notes “Observing Chemical Change”

Today’s Objective The student will be able to recognize if a chemical equation is balanced by counting atoms on reactant and product side.

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:

Changes of Matter Physical Change- a change that alters the appearance or form of a substance but doesn’t produce a new substance. Ex: melting ice Chemical.

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

(8th) Chapter 6-2 Cornell Notes

Chemical Reactions: The Law of Conservation of Mass

Putting chemical reactions into words

Molecule & Compound Notes

7.P.2B.5 Develop and use models to explain how chemical reactions are supported by the law of conservation of matter.

Chemistry of Living Things Part 1 Basic Chemistry

Chemical Reactions: The Law of Conservation of Mass

Describing Chemical Reactions

Balancing Equations.

Chapter 6.2 Describing Chemical Reactions

Chemical Formulas.

Putting atoms together

Describing Chemical Reactions

Chemical Equations.

Chemical Reactions: The Law of Conservation of Mass

Chemical Reactions.

Chemical Formulas Coefficient Subscript #of molecules 5CO2 #of atoms.

CHEMICAL INTERACTIONS

Chemical equations.

What is Chemistry? And WHY?.

Chemical Reactions Section 2.4.

Chemical Reactions.

The left side of the equation contains the reactants, which interact to form the new substances, or products. The products are on the right side.

Chemical equations.

Presentation transcript:

The Language of Chemistry

Language of Chemistry  Formula: A combination of symbols that shows the ratio of elements in a compound. ex: H 2 O

 Chemical Equation: A short, easy way to show a chemical reaction, using symbols instead of words ex: 2Na + Cl 2  2NaCl

 Subscript:A small number in a formula that tells the number of each element in a compound. ex: CO 2

 Coefficient: A BIG number placed in front of a formula that tells how many atoms are involved in a reaction. ex: 2Na + Cl 2  2NaCl

 Reactant:A substance that enters into a chemical reaction (what you start with). Reactant(s)  Product(s) 2Na + Cl 2  2NaCl

 Product:A substance formed as a result of a chemical reaction (what you produce or end with). Reactant(s)  Product(s) 2Na + Cl 2  2NaCl

+:Is added to or combined with.  :Yields or produces.