Vocab Practice

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A collection of atoms of one type that cannot be decomposed into any simpler units except by spontaneously changing into other units by radioactive processes

This occurs when a substance changes its state or when a materialis broken into smaller pieces or combined into larger ones

The basic structural unit of matter; smallest particle of an element that can enter into a reaction

The smallest particle of an element or compound that displays the properties of the substance in quantity

A grouping of elements based on similar chemical properties

The relationship between the mass and volume of a subtance.

A shorthand notation to describe elements and their reactions

Information gathered using the 5 senses