Chemical Formulas & Equations

Question 1

How are chemical formulas used?

Answer 1

To identify substances and determine the atom numbers of each element in chemical formulas containing subscripts.

Question 2

What happens to atoms of substances during a chemical reaction?

Answer 2

The atoms rearrange themselves to form new substances.

Question 3

Reactants

Answer 3

The energy and atoms/molecules of the ORIGINAL SUBSTANCE.

Question 4

Products

Answer 4

~Formed from reactants

~the energy, atoms, and molecules of the NEW SUBSTANCE

Question 5

Subscripts

Answer 5

atom number of each element, to the right of the element symbol

Question 6

Coefficient

Answer 6

~in front of a molecule’s chemical formula

~represents the molecule number in each reaction

Question 7

Law of Conservation Mass

Answer 7

the total atom number of each element in a chemical equation is not changed during a chemical reaction

Question 8

How do you know when a chemical equation is balanced?

Answer 8

when the reactants and products have the same number of each atom on each side in a chemical equation.