Chapter19 Study Guide Physics Principles And Problems
Chemical equation - a way to describe a chemical reaction using a chemical formulas and other symbols. Coefficient- the number written before a substance. Indicates the number of units of each substance. Balancing equations - process involves changing coefficients in a reaction.
To achieve the same number of atoms of each element on both sides of the equation. Finding out which coefficients to use to balance an equation is often a trial-and-error process.
Physics Principles And Problems Pdf
Step 1: write a chemical equation for the reaction using formulas and symbols. Step 2: count the atoms in the reactants and products. Step 3: choose coefficients that balance the equation. Remember: never change subscripts of a correct formula to balance an equation.