Chemistry Study of Matter

University:
High School
Course:
High School Chemistry
Academic year:

2021
Views:

374

Pages:

2
Author:

Adyson Wilkerson

I. Fill in the blanks with the most appropriate term: A Balanced Equation tells the story of a chemical reaction. Reactants are the starting substances in the reaction while Products 1 are the new substances that are formed. The large numbers in front of some of the formulas are called Coefficients. These numbers are used to balance the equation because chemical reactions must obey the Law of Conservation 2 of Matter. The number of atoms of each element on both sides of the equation must be Equal because matter cannot be Created or Destroyed. When balancing 3 equations, the only numbers that can be changed are Coefficients. Remember that Formulas must never be changed in order to balance an equation. Balance the following equations: 4 Al + 3 O₂ → 2 Al₂O₃ C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O Al(NO₃)₃ + 3 NaOH → Al(OH)₃ + 3 NaNO₃ Type of Reaction 2 KNO₃ → 2 KNO₂ + O₂ Decomposition (1 Reactant) 3 O₂ + C₂S₂ → 2 CO₂ + 2 SO₂ Decomposition 2 KClO₃ → 2 KCl + 3 O₂ Decomposition 3 BaF₂ + 2 K₃PO₄ → Ba₃(PO₄)₂ + 6 KF Double Replacement H₂SO₄ + Mg(NO₃)₂ → MgSO₄ + 2 HNO₃ Double Replacement 2 Al + 3 H₂SO₄ → Al₂(SO₄)₃ + 3 H₂ Single Replacement WO₃ + 3 H₂ → W + 3 H₂O Single Replacement