chemistry notes ch. 8

Topics: Chemical reaction, Chemistry, Chemical reactions Pages: 2 (409 words) Published: October 8, 2013
Chapter 8 vocabulary
Chemical equation- represents, with symbols and formulas, the identities and relative molecular or molar amounts of reactants and products. Precipitate- a solid that is produced as a result of a chemical reaction in solution and that separates from the solution Coefficient- is a small whole number that appears in front of a formula in chemical equations Word equation- an equation in with the reactants and products in a chemical reaction are represented by words. Formula- represents the reactants and products of a chemical reaction by their symbols or formulas. Reversible reaction- a chemical reaction in which the products re-form the original Synthesis reaction- a composition, reaction, 2 or more substances combine to form a new compound Electrolysis- the decomposition of a substance by an electric current Double displacement reactions- the ions of 2 compounds exchange places in an aqueous solution to form 2 compounds Combustion reaction- a substance combines with oxygen, releasing a large amount of energy in the form of light and heat Activity series- a list of elements organized according to the ease with which the elements undergo certain chemical reactions. Chapter 8 objectives.

List 3 observations that suggest that a chemical reaction has taken place- odor, light, and heat List 3 requirements for a correctly written chemical equation- represent known facts, contains the correct formulas for the reactants and products, and follows law of conservation of mass. Write a word equation and a formula equation for a given chemical reaction- Define and give general equations for synthesis, decomposition, single-displacement, and double displacement reactions- See definitions above Classify a reaction as a synthesis, decomposition, single-displacement, or combustion reaction- A+X  AX (synthesis reaction) List 3 kinds of synthesis reactions and 6 kinds of decomposition reactions- Synthesis reactions: reactions of elements with oxygen and...
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