Study Guide

2. which group is all radioactive
8. what is a vertical row on the periodic table called
11. which group is colorless and odorless
15. which group is reactive with group 17
17. what has the proporties of metals and nonmetals
18. what is the name of the thing that describes how many protons are in an element
19. what is a horizontal row on the periodic table called
20. what is a uncharged particle found in the nucleus called
21. what do you call an atom that loses or gains electrons
22. what is an atom that gains an electron called
23. which group is very reactive whith groups 1 and 2
24. which group has rare earth metals

1. what is found in all atoms but has a negitive charge
3. what elements are poor conductors of heat and electricity
4. where are electrons most likely to be found
5. what do you call when unstable atoms become more stable atoms by emitting particles and radiation
6. which group of metals are good conducters and can be easily shaped
7. what is an element that can be turned into wire
9. what is it called when atoms change their identities
10. which group is very reactive with group 17
12. what is found in the nucleus and has a positive charge
13. what is found in the center of the atom
14. what is each proton or neutron eaqual to
16. What is it called when an atom has different neutrons
19. what is an atom that loses an electron called