Balancing Equations Review

1. The _______ are new substances that are created following a chemical reaction.

• Product

• Reactants

• chemical reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The _________________ are either elements or compounds which are present prior to a chemical reaction.

• product

• reactant

• chemical reaction

Tags

NGSS.MS-PS1-2

The arrow in a chemical equation represents the ______.

• product

• reactant

• chemical reaction

The large number before a molecule is called a _______________

• coefficient

• subscipts

• product

• reactants

The subscript represents the number of ________________ in a chemical equation.

• atoms

• molecules

• elements

How many molecules of CO2 molecules are present? ___________

• 2

• 4

• 6

• 12

Tags

NGSS.MS-LS1-6

NGSS.MS-PS1-5

How many atoms of oxygen are present in the reactants?

• 1

• 3

• 12

• 18

Tags

NGSS.MS-LS1-6

How many atoms of carbon are present in the products?

• 3

• 6

• 9

• 18

Tags

NGSS.MS-LS1-6

NGSS.MS-PS1-1

NGSS.MS-PS1-5

How many total atoms are present in C6H12O6?

• 1

• 6

• 12

• 24

Tags

NGSS.MS-PS1-1

Is the equation above balanced or unbalanced? ___________

• yes

• no

• unable to determine

Tags

NGSS.MS-PS1-5