Vocab: Empirical and Molecular Formulas

Front

A number in front of a chemical formula indicating the amount of molecules or atoms in a reaction.

Back

Coefficient

Tags

NGSS.MS-PS1-5

Front

A number in a chemical formula indicating atom count or element ratio.

Back

Subscript

Front

Formula showing smallest whole-number mole ratio of elements in a compound, not necessarily the same as the molecular formula.

Back

Empirical Formula

Front

Actual number of atoms of each element in a molecule of a compound.

Back

Molecular Formula

Tags

NGSS.MS-PS1-1

Front

Study of amounts of reactants/products in chemical reactions (chemical recipes)

Back

Stoichiometry

Tags

NGSS.HS-PS1-7

Front

A substance made of atoms from 2+ different elements joined by chemical bonds.

Back

Compound

Tags

NGSS.MS-PS1-1

Front

A substance present at the start of a chemical reaction

Back

Reactant

Front

A substance formed in a chemical reaction

Back

Product

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Process that changes one set of chemicals into another.

Back

Chemical Reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Same empirical formula: C₂H₄O₂ & C₆H₁₂O₆

Back

C₂H₄O₂ & C₆H₁₂O₆

Tags

NGSS.MS-PS1-1