Cool Chemistry Crossword

2. solid, shiny, good conductor of heat and electricity
4. (on the P.T) this is what each vertical row on the table is called
7. mass approximately the number of protons and neutrons in an atom (add these together and you'll find it)
8. gas all of these gasses have a full outer orbital shell
10. one of the 118 that make up the Periodic Table
13. the middle of an atom, powerhouse
20. doesn't carry a negative charge, but a ____ charge
21. of Conservation of Mass the mass of products in a chemical reaction must equal the mass of the reactants
22. electron outermost energy level of an atom
23. share characteristics of both
24. the absorption of heat

1. Mendeleev Russian, discovered the Periodic Law
3. H2O is an example of this
5. during a chemical reaction the reactants are formed into these
6. abbreviation of an element, usually related to the name and typically has only two letters
9. (on the P.T) this is what each horizontal row on the table is called
11. the release of heat
12. brittle not malleable or ductile, poor conductor of heat and electricity
14. a mixture composed of two or more separate elements
15. a group of atoms linked together to make a substance
16. doesn't really carry any sort of charge, it's just ___
17. a substance that undergoes a change during a chemical reaction
18. carries a ___ charge (not a positive one)
19. shell of an atom