Conservation of Mass

Number placed in front of a chemical formula.

• product

• reactant

• coefficient

• subscript

Number written below and to the right of a chemical symbol

Example: Cl₂

• subscript

• reactant

• product

• coefficient

Substances that form as the result of a chemical reaction.

• products

• reactants

• coefficients

• subscripts

Substances present at the start of a chemical reaction.

• subscripts

• reactants

• coefficients

• products

Measure of the amount of matter

• mass

• volume

• weight

• density

Anything that has mass and takes up space.

• gravity

• matter

• force

• volume

How many atoms of Carbon (C) are in C₆H₁₂O₆?

• 3

• 6

• 12

• 24

How many Sodium (Na) are in 6NaCl?

• 1

• 12

• 6

• 3

How many Aluminum (Al) are in Al₂O₃?

• 3

• 5

• 2

• 1

How many Hydrogen (H) are in 4H₂O?

• 6

• 2

• 8

• 4