Understanding Atoms and Matter

Front

Origin of the word "atom"

Back

Came from the Greek word atomos, meaning indivisible or uncuttable

Front

Charge of the neutron

Back

No charge, making it harder to detect

Front

Definition of a mixture

Back

A substance consisting of two or more substances not chemically combined together

Front

Characteristics of Group 1 elements

Back

The Alkali Metals – very reactive metals

Front

Characteristics of Group 7 elements

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The Halogens – very reactive and very toxic non-metals

Front

Reactive metals in the periodic table

Back

Alkali Metals and Alkali Earths

Front

Mass Number

Back

The total number of protons and neutrons in an atom's nucleus.

Front

Groups in the Periodic Table

Back

Vertical columns in the periodic table, indicating elements with similar chemical properties.

Front

Periods in the Periodic Table

Back

Horizontal rows in the periodic table, indicating elements with increasing atomic numbers.

Front

Metals

Back

Elements that are typically shiny, conductive, and malleable.