REACTION MATH!!!!! Sorry you have to learn to do basic chemistry in middle school. .
REACTANTS AND PRODUCTS • Reactants are what goes into the chemical reaction – Reactants = what is reacting in the reaction. RE-ACT-ING : RE-ACT-ANT, Pretty self explanatory. • Products are what comes out of the chemical reaction – Products = what is produced in the reaction, more self explanatory
COEFFICIENTS AND SUBSCRIPTS • Coefficients tell how many of that element of molecule there are in the chemical equation • Subscripts tell how many of that element are in that molecule
CHEMICAL EQUATIONS - Tell you how many of that molecule are present on that side of the reaction Subscripts - tell you how + plus signs separate molecules many atoms of that element are present in the molecule
COEFFICIENTS AND SUBSCRIPTS
THE LAW OF CONSERVATION OF MATTER (MASS) Matter cannot be created or destroyed, it only changes forms. Thus, the number of atoms of each type and total mass MUST be the same before and after any chemical reaction.
The Law of Conservation of Matter Example of Rxn. math: Methane Burning
BASICALLY ITS JUST THE SAME AS A MATH EQUATION! Numbers on both sides of the = sign must be equal. ‘s 2 +2 = 4 2+2=5 Are = of chemical reactions It just does! Just doesn’t make any sense! Same thing applies to mass and atom # in chemical reactions
WHAT YOU PUT INTO A REACTION, YOU MUST GET BACK OUT OF THE REACTION! (IN MASS AND ATOM #)