PPT-Chemical Formulas and Equations

NOTES MOLECULE A molecule is two or more atoms that have chemically combined Examples H 2 O amp O 2 CHEMICAL FORMULA A Chemical Formula is a description of the number and kind of atoms found in a single molecule of a substance using the . http://www.youtube.com/watch?v=F54rqDh2mWA. Chemical Change v. Physical Change. Chemical Change . Break or form chemical bonds. Molecular formulas of the products are NOT exactly the same as the reactants. Lesson 2-5. A _______________ _______________ is an equation that involves two or more variables.. literal. equation. Rewriting a Literal Equation:. –. 2x + 5y = 12 Solve for y. .. _________________________________ . Theme: . Changes and Reactions . LecturePLUS Timberlake. 2. color. melting point. boiling point. electrical conductivity. specific heat. density . state (solid, liquid, or gas). . Lecture 3 Topics. . Brown. , chapter 3. 1. Moles. . . 3.4. Molecular mass (aka . molecular . weight) . . 3.3. 2. Molar . converstions. Percent composition . 3.3. Empirical formulas . SECOND EDITION. Unit 1: ALCHEMY. Matter, Atomic Structure, and Bonding. Lesson 21: Salty Eights. Formulas for Ionic Compounds. ChemCatalyst. Find these cards in . Your Salty Eights . card deck.. 1. List the ionic compounds you can make with pairs of cards, using two different elements.. Parts of a chemical equation:. Reactants. : a substance present at the beginning of a chemical reaction. (Left side). Products. : a substance that is produced during a chemical reaction (Right Side). THE MOLE. Mole. -The . number of C atoms in exactly 12.0 g of carbon., also a number 6.022 x 10. 23. Avogadro’s number . 6.022 x 10. 23. , the number of . particles. in a mole of . anything. More on the mole later……. Recognize that chemical formulas are used to identify substances and determine the number of atoms of each element in chemical formulas containing subscripts.. Recognize whether a chemical equation containing coefficients is balanced or not and how that relates to the law of conservation of mass.. Chapter 5: Molecules and Compounds. Learning Goals. Write . chemical formulas.. Determine . the total number of each type of atom in a chemical formula.. Classify . elements as atomic or molecular.. Classify . . 1. Describing a Chemical Reaction. A chemical reaction = the process by which one or more substances is changed into one or more different substance. s.. Reactants. = the original . substance(s. 10.1 . Reactions and . Equations. Evidence of Chemical Reactions. ..  . The process of which the atoms of one or more substances are rearranged to form different substances is called a . Chemical Reaction. General definitions. Mole. Homogeneous mixture. Heterogeneous mixture. Pure Substances. Compounds . Chemical Change . Chemical Property. Physical Change . Physical Property. Solid . Liquid . Gas. Evaporation. Chemistry 1-2. Mr. . Chumbley. Section 1: Describing Chemical Reactions. Chemical Reactions. A . chemical reaction . is a process by which one or more substances change to produce one or more different substances. Chemical . Formulas. Chemical formula . - A shorthand notation for a compound or diatomic element.. Shows the elements and how many atoms of each element are in the compound/molecule.. C. 6 . H. 12. O.