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Chemistry

Across
A chemical substance containing Hydroxide
The periodic table was invented to organize these.
The opposite of basic.
This element is the most abundant on earth.
The smallest part of an element that still retains property of said element.
The centre of an atom.
This element is the most plentiful element in the earth's crust.
This element is the fifth most common element in the universe, but is quite rare on earth.
This group contains the most reactive elements on the periodic table.
This group is the only group who's reactivity decreases as you move down the group.
All known life on earth is based in this element.
This element was named after Marie Curie.
This subatomic particle, also found in the nucleus, is positively charged.
Down
These negatively charged subatomic particles are found in orbitals surrounding the nucleus.
The term for negatively charged ions.
A positively charged ion.
This is the term for any atom that is not neutrally charged.
These elements have chrichteristics of both metals and non-metals.
There are several 'flavors' of these subatomic particles; up, down, charm, strange, top and bottom.
This is the the standard for measuring quantities of atoms.
This element makes up the majority of the earth's atmosphere.
These subatomic particles, found in the nucleus, have no charge.