Chemical Equations & Reactions Chapter 8 Chemical Reaction The process by which the atoms of one or more substances are rearranged to form different substances Chemical…

Chemical reactions Evidence of chemical rxns: Change in enthalpy Change in color Formation of a gas Formation of a ppt Chemical reaction- represented by an equation 2 C2H2…

Describing a Chemical Reaction Indications of a Chemical Reaction Evolution of heat, light, and/or sound Production of a gas Formation of a precipitate Color change ENERGY…

Chemical Equations Review CH4 + 2O2 CO2 + 2H2O “coefficients” “subscripts” coefficients can be changed to achieve mass balance but subscripts are never changed to…

Chapter 9 Balancing Equations Parts of a Reaction H2SO3 (aq)  H2O (l) + SO2 (g) Reactants Products l = liquid g = gas aq = aqueous (water solution) Mixture NaCl (aq) s…