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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.
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.
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.
Section 2Chemical Reactions Describing Reactions 〉 What is a chemical equation? 〉 A chemical equation uses symbols to represent a chemical reaction and.
Pure Substances Mr. Skirbst Physical Science Topic 12.
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.
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 Formulas & Equations. Molecule A combination of two or more atoms bonded together.
Today’s Objective The student will be able to recognize if a chemical equation is balanced by counting atoms on reactant and product side.
Molecules and Compounds. Compound Formed from 2 or more elements in a specific proportion When combined, new properties are created They contain 2 or.
Describing Reactions What is a chemical equation? What is a balanced equation? How can equations be checked for balance?
Balancing equations Unit 2 Chemistry. Writing Chemical Equations Products: are the chemicals that are made or produced in the reaction. Reactants: are.
When elements are chemically combined, they form compounds having properties that are different from those of the uncombined elements.
821 Identify the reactants and products of a chemical reaction.
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.
Chemical Reactions: The Law of Conservation of Mass.
Chemical REACTIONS-Words to know! Chemical EQUATION- Chemical EQUATION- The shorthand method for representing changes that take place during a chemical.
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.
Chemical Reactions Notes. Chemical Reaction Definition: When substances combine to form a new substances.
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.
(8th) Chapter 6-2 Cornell Notes “Observing Chemical Change”
Notes Key Points About All Chemical Reactions: No atoms are lost or gained during chemical reactions SPI Law of Conservation of Mass You.
Notes Key Points About All Chemical Reactions: A new substance is formed NN o atoms are lost or gained during chemical reactions atomic bonds are.
Chemical Reactions - Describing Chemical Reactions Describing Chemical Reactions Cellular phone messages make use of symbols and abbreviations to express.
Chemical Equations Aim CE1a What does the chemical equation for photosynthesis tell us?
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.
4 – Investigate and describe the compounds formed by bonding elements. 3 – Describe why certain elements bond with others. 2 – Use the periodic table.
Balancing Chemical Equations. Chemical Equations Review Chemical equations need to be balanced due to the Law of Conservation of Mass. This law states.
Chemical Reactions. - Observing Chemical Change Properties and Changes in Matter Matter can undergo both physical change and chemical change.
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.
The Language of Chemistry Matter, Symbols, Formulas & Chemical Equations.
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.
Physical vs. Chemical Change How are they different?
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.
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.
Chemical Formulas & Equations 8 th Grade Science 2010 H 2 O NaCl CO 2 2H 2 + O 2 = 2H 2 O.
Stoichiometry – Chemical Quantities Notes. Stoichiometry Stoichiometry – Study of quantitative relationships that can be derived from chemical formulas.
Elements & Compounds Notes TEKS: (6.5) Matter and energy. The students knows the differences between elements and compounds Differentiate between elements.
17-2 Describing Chemical Reactions. Symbol Represents one kind of an element Ex: C = carbon Ex: Na = sodium.
–Chemical reactions occur when bonds between the outermost parts of atoms are formed or broken.
Chemical Formulas and Equations Vocab – Part 1. Element pure substances = 1 type of atom (all the same) Examples: H H 2.
a shorter, easier way to show chemical reactions, using symbols, not words, for the reactants and the products hydrogen molecules react with oxygen molecules.
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.
Chemical Reactions and Equations CLASS NOTES. Review from last class What types of changes can occur as a result of chemical reactions? – Can you give.
Chemical Reactions. Nature of Reactions A chemical reaction is when you create a new substance with unique physical and chemical properties.
Conservation of Matter Mr. Luke’s Physical Science.
Physical Science Chapter 10.1 Part 2. Think, discuss with partner, discuss with class 1) What are signs of a chemical change? DO they always mean.
Chemical Formula atom molecule compound ex: H 2 0, NaCl element O O 2 matter.
(2.3) CHEMICAL EQUATIONS (p ). Recall: Word Equation A word equation - states what reacts and what is produced - uses words instead of formulas.
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