Chemistry Crossword

1. electron, The electrons in the outside shell of atoms. They are the furthest from the center and have the most energy
5. The property of unstable atoms that emit to nuclear radiation
7. Change, A change in which does not change the original substance
8. State, When an electron temporarily occupies an energy state greater than its ground state
9. Atoms with the same number of protons, but different numbers of neutrons
13. Change, A change in which a substance is changed into a different one
16. Used to make the same amount of atoms on either side of the arrow to make the equation balanced.
17. Indicates the charge of an ion.
21. Vertical on the periodic table, the ___________ number indicates the number of valence electrons
23. The number of atoms chemically bonded together.
25. The ability to be drawn out into long, thin wires
26. Made up of 2 or more atoms
28. Made up of a single atom
29. Atoms that lose or gain electrons to have a full valence shell, therefore giving the atoms a positive or negative charge

2. Mass, The average mass of atoms of an element
3. What makes a chemical reaction happen?
4. State, The state of lowest energy for that electron
6. What the matter is made of
10. Orbits the nucleus
11. Horizontal on the periodic table and indicates the number of shells occupied
12. Metals, Groups 3-12 on the periodic table
14. Bonding, Chemical bonding that rises from electrostatic force between conduction electrons and positively charged metal ions
15. The state that the matter is in (for example: (l), (s), (g), (aq).)
18. Symbolic representation of a chemical reaction
19. Contains two or more pure substances.
20. What does a chemical reaction produce?
22. Number, Number of protons in the nucleus of an atom
24. How the matter is put together
27. The amount of mass packed into matter