Question

A ________________ ________________ tells the story of a chemical reaction. ________________ are the starting substances in the reaction while ________________ are the new substances that are formed. The large numbers in front of some of the formulas are called ________________. These numbers are used to ________________ the equation because chemical reactions must obey the Law of ________________ of Matter. The number of atoms of each element on both sides of the equation must be ________________ because matter cannot be ________________ or ________________. When balancing equations, the only numbers that can be changed are ________________; remember that ________________ must never be changed in order to balance an equation.

Answer 1

Answer:

chemical equation

Reactants; products

coefficients.

balance; Law of Conservation of Matter.

equal; created or destroyed.

coefficients;  formulas

Explanation:

• The story of a chemical reaction is depicted by a chemical equation.

• The starting substances in the reaction are reactants while the new substances that are formed are products

• The coefficients are the numbers used in front of the formulas.

• In order to balance the equation, the coefficients are used because the chemical reactions must obey the Law of Conservation of Matter.

• The Law of conservation of matter is the basic principle that states energy is neither created nor destroyed but the energy can be transformed from one form to another.
• An equal number of atoms must be present on both sides of the equation as matter can neither be created nor destroyed.

• The only numbers that are coefficients can be changed while balancing equations; formulas must never be changed.

Answer 2

Answer:

chemical equation

reactant