PPT-Chapter #10 Chemical Calculations and Equations

STOICHIOMETRY Stoichiometry is the use of balanced chemical equations in the conversion process STOICHIOMETRY Stoichiometry is the use of balanced chemical equations in the conversion process. HIGHER LESSON. Learning Objectives. To . explain. what chemical equations tell us about chemical reactions. To . explain. how we use equations to calculate masses of reactants and products. HIGHER LESSON. 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. I can identify the products and reactants in a chemical reaction.. I can state the law of conservation of matter.. I can determine the number of each atom in a compound based on subscripts and coefficients.. PROCESS REQUIRED CHEMICAL DOSAGE CALCULATIONS Single-Stage Lime: For waters with high calcium, low magnesium, Lime addition for softening: Soda ash addition for softening: Carbon dioxide for pH adj 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). They tell us how much of each substance is involved in a chemical reaction. 2H. 2. + O. 2. .  2H. 2. O. 2 moles of hydrogen react with 1 mole of oxygen to make 2 moles of water. This is useful because now we can use it to work out what mass of hydrogen and oxygen we need and how much water is made. Chemical Changes vs. Physical Changes. Physical changes are . changes in the physical appearance, state or size of a substance. .. Chemical changes are . changes in the arrangements and connections between ions and atoms, and a change in chemical properties.. The International System of Units. Danielle DelVillano, Pharm.D.. 1. Objectives. Demonstrate an understanding of the International System of Units. Convert measures within the International System of Units. In a chemical reaction the total mass of everything at the end of the reaction is the same as the total mass at the beginning.. The Law of Constant Composition. However you make a compound, it always contains the same elements in the same proportions by mass.. Ionic compounds can form from transition metals. Transition metals do not always follow the patterns that we discussed. Can have more than one oxidation number (charge. ). To identify the charges of transition metals, roman numerals are placed in their name, directly after the transition metal. 2. 8.1: First Order Systems. We now look at systems of linear differential equations.. One of the main reasons is that any nth order differential equation with n > 1 can be written as a first order system of n equations in n unknown functions.. 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. 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.