Chemistry Puzzle

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	ACROSS		DOWN
2	Negative charge outside nucleus of atom	1	Group "7a" in perodic table-fluroine and chlorine
5	Electrons that are negative	3	Smallest part of any element that exsists and still has properties unique to that element
8	Central part of atom	4	Neutral charge in nucleus of atom
10	Atom with certain number of neutrons where number of neutrons can change	6	Use this to pass an electric current through liquid or nitrogen gas
13	Two or more metals mixed together	7	Positive charge in nucleus of atom
14	Electrons that are positive	9	Branch of science, studies atoms, chemical reactions and substances
15	Combination of two sciences that deal with chemical reactions and organisms	11	Substance made up of atoms. building blocks of life
17	Destroys or weakens germs	12	Lithium, sodium and others are metallic metals
		16	Atom or atoms with positive or negative charge

Instructions:

The gray boxes indicate a right word

The red boxes indicate a wrong word.

The yellow boxes indicate a right letter.

The orange boxes indicate a wrong letter.

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	The gray boxes indicate a right word
	The red boxes indicate a wrong word.
	The yellow boxes indicate a right letter.
	The orange boxes indicate a wrong letter.