Periodic Table

4. When this transfer occurs, the electron number changes, causing the atom to be _______.
5. Metals ______ electrons to become ions.
7. React violently with most nonmetal.
9. Group 17 period 4 of halogens.
10. Boron is a group of_____.
12. Group 1 period 2 of alkali metals.
13. Alkali metals react with _____ to make strong bases.
15. Metals have ____ melting point.
16. The only group that contains solids, liquid, and gases.
17. What was not discovered that prevented Mendeleev from organizing his periodic table by increasing atomic number?
18. The person that is credited for designing the first periodic table.
19. All are radioactive.
21. This group is extremely soft like cream cheese.
22. When metals and nonmetals chemically bond together, ions are formed from ________ of electrons.
23. The fourth element of actinides.
27. Group 18 period 1 of noble gases.
29. Mendeleev organized the elements in order of increasing _____?

1. Carbon is a group of _____.
2. Nonmetals _______ electrons to become ions.
3. Nonmetals is a ____ conductors of heat and electricity.
6. This group is relatively soft and gray white luster when cut.
8. Good conductors of heat and electricity that come from ores in earth's crust.
11. Valence electrons are the electrons in the _______ energy level.
14. Lanthanides react _________ with most nonmetal.
20. Group 2 period 4 of alkaline earth metals.
24. Have full valence electron shells.
25. Group 4 period 4 of transition metals.
26. Valence electrons are the _________ electrons.
28. What can be easy or hard to change for Metalloids?
30. Copper is a group of _____.