Chemistry

4. mixture/ the same apperence and property throughout the whole mixture.
7. row of elements.
11. combination of two or more substances that are not chemically combined.
13. pure substance that cannot be seperated into simpler substances by chemical or physical means.
14. electrons/ electrons in their outter most energy level.
15. gases/unreactive nonmetals.
16. repeating pattern.
17. particles that form during chemical changes.

1. the substances formed from a chemical reaction.
2. explanantion for a broad range of hypothosises and observations.
3. the starting materials in a chemical reaction.
5. representation of an object or a symbol.
6. equation/a shorthand description of a chemical reaction using chemical formulas and symbols.
8. charged particles found in all atoms.
9. reactive nonmetals.
10. smallest particle into which an element can be divided and still be the same substance.
12. pure substance composed of two or more elements that are chemically combined.