Chemical Equations Vocabulary

A shorthand representation of an element or compound using chemical symbols.

• Chemical Equation

• Chemical Formula

• Molecule

• Subscript

Tags

NGSS.MS-PS1-1

A representation of a chemical reaction using chemical symbols for elements and compounds.

• Chemical Formula

• Chemical Equation

• molecule

• subscript

Tags

NGSS.MS-PS1-5

Two more atoms chemically combined.

• atom

• subscript

• coefficient

• molecule

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

The number written after an element’s symbol in a chemical formula that indicates the number of atoms of a specific element.

• coefficient

• subscript

The number in front of an element or compound that indicates the number of molecules in a chemical formula.

• coefficient

• subscript

Elements or compounds on the left side of a chemical equation.

• Coefficient

• subscript

• reactants

• products

Tags

NGSS.MS-PS1-2

Elements or compounds on the right side of a chemical equation.

• reactants

• products

• coefficient

• subscript

Tags

NGSS.MS-PS1-5

The number of atoms for each element are equal for the reactants and products.

• balanced equation

• unbalanced equation

Tags

NGSS.MS-PS1-5

The number of atoms for each element are not equal for the reactants and products.

• balanced equation

• unbalanced equation

Tags

NGSS.MS-PS1-5

The Law of Conservation of Mass states that:

Matter cannot be created or destroyed – the mass of the products in a chemical reaction must be equal to the mass of the reactants.

• True

• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5