Write & balance rxns

I. Intro to Reactions Chp 11: Chemical Reactions

A.Signs of a Chemical Reaction ,[object Object],[object Object],[object Object],[object Object]

B.Law of Conservation of Mass ,[object Object],4 H 2 O 4 H 2 O 4 g 32 g 36 g ,[object Object],[object Object]

C. Chemical Equations ,[object Object],REACTANTS PRODUCTS

D. Writing Equations ,[object Object],[object Object],2H 2 ( g ) + O 2 ( g )  2H 2 O( g ) ,[object Object],[object Object],[object Object],[object Object]

D. Writing Equations ,[object Object],[object Object],[object Object],[object Object],Al 2 ( s ) + 3 CuCl 2 ( aq )  3 Cu ( s ) + 2 AlCl 3 ( aq )

E. Describing Equations ,[object Object],[object Object],[object Object],[object Object],3 molecules of carbon dioxide 2 atoms of magnesium 4 units of magnesium oxide 3CO 2  2Mg  4MgO 

E. Describing Equations ,[object Object],[object Object],[object Object],[object Object],Zn( s ) + 2HCl( aq )  ZnCl 2 ( aq ) + H 2 ( g ) One atom of solid zinc reacts with two molecules of aqueous hydrochloric acid one unit of aqueous zinc chloride and one molecule of hydrogen gas.

II. Balancing Equations Chp 11: – Chemical Reactions

A. Balancing Steps ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

B. Helpful Tips ,[object Object],[object Object],[object Object],[object Object],[object Object]

C. Balancing Example ,[object Object],1 1 1 1 2 3 2  3  6   3 3 3 2 2  2  6 Al + CuCl 2  Cu + AlCl 3 Al Cu Cl

Write & balance rxns

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