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TJ

Across
Negative charged (negative 1), mass =0005amu, moves rapidly around nucleus and included in bonding
A material or substance that is found in all 3 states of matter on Earth
Used to represent chemicals
No charge, mass = 1amu, and little movement
Down
System for organizing information
If known the properties of one element - can predict the properties of other elements in the same group
When you have 2 or more matierials that are combined
Positive charge (+1), mass = 1amu and little movement