_____ Atoms cannot be created or destroyed. _____ The symbol (s) means the material is in solution. _____ In burning, a material reacts with hydrogen gas. _____ Tarnish is silver sulfide _____ A skeleton equation shows only the important reactants and products. _____ The symbol represents a reversible reaction. _____ Equations should be balanced even if the formulas are incorrect. _____ In balancing equations, a coefficient of 1 is never shown. _____ All coefficients must be at the lowest possible ratio in a properly balanced equation. _____ A skeleton equation shows the relative amounts of all materials in the reaction.
Fill in the Blank: 21. Write skeleton equations for the following reactions: 1. 2. 3. 4.