1._______cannot be seperated by physical or chemical means.
2.Elements are abbreviated with_____,which consist of one or two______.
3.Elements are are organized on the____according to their____.
4.Two or more elements chemically combined make up a_____.
5.Elements and compound are called____substances because they have a unique set of chemical and physical_____.
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Answer:
1. Atoms
2. Atomic Symbol, letters
3. Periodic Table, Atomic Number
4. substance
5. pure, characteristics