Vocabulary - Atoms, Molecules, And Compounds printable pdf download

Vocabulary - Atoms, Molecules, And Compounds

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Date

Vocabulary

STUDENT RESOURCE 2.1

INFORMATION SHEET

atom the smallest particle of an element

element a pure substance made of only

that has the properties of the element

one type of atom

Copper is an element. If you could

An oxygen atom is the smallest

particle of oxygen that has oxygen’s

divide a piece of copper until it was the

properties. If you divide this atom, you

smallest piece possible, this piece would

have smaller particles, but they don’t

be a copper atom.

have oxygen’s properties.

molecule the smallest particle of a

compound a pure substance that

compound

contains atoms of different elements

The chemical formula of the

compound carbon dioxide (CO

) shows

Water is an example of a compound.

A molecule of water contains two

that a molecule of carbon dioxide

hydrogen atoms and one oxygen atom.

contains one atom of carbon (C) and two

atoms of oxygen (O).

CHEMISTRY • SECTION 2 ATOMS, MOLECULES, AND COMPOUNDS

Vocabulary - Atoms, Molecules, And Compounds