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Periodic Table Fun

Kathryn Stone
Across
an element that has properties of both a metal and non-metal
an electron in the outer most energy level of an atom
Positively charged particles
An atom with more protons than electrons
Special unit used for the mass of a subatomic particle
the elements that are good conductors of heat and electricity
a substance that cannot be broken into smaller pieces
the elements that are usually poor conductors of heat and electricity
Negatively charged particles
a vertical column of elements in the periodic table
the total number of protons and neutrons in the nucl
Down
The first element on the periodic table
The smallest piece of matter
the chart that organizes the elements
The number of protons in an element's nucleus
a horizontal row of elements in the periodic table
an atom with more electrons than protons
Neutral particles.
The center of an atom