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Chemicals

OFr

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8            

Across
1.Two or more atoms chemically bonded together - doesn't matter what type.
4.The table in which you can find all of the elements.
5.Basic building block of matter.
6.A substance made from two or more TYPES of atom chemically bonded together.
8.The part of the atom at its centre.
Down
2.These tiny particles orbit the centre of the atom.
3.The other type of particle found in the nucleus. These help to make up the mass number (number above an element in the P.T.)
4.Particles found in the nucleus; the number of these is below the element symbol in the P.T.
6.The first letter of any element is this.
7.The total amount of stuff in an atom. It's represented by the number above an element in the P.T.

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