Name:__________________________ Date:_________ Period:____
Review Test #2
1. Why do atoms form ions?
To become stable by having a full outer valence electron shell
2. Draw the Lewis Structures for the elements in period 2.
List the # of protons, neutrons, and valence electrons in the elements in period 2.
Li 3p,4n,1ve
Be 4p, 5n, 2ve
B 5p, 6n, 3ve
C 6p, 6p, 4ve
N 7p, 7n, 5ve
O 8p, 8n, 6ve
F 9p, 10n, 7ve
Ne 10p, 10n, 8ve
3. Determine the number of electrons in an ion of an element in period 2. Provide the
charge on those ions.
Li 2e +1
B 2e +2
B 2e +3
C 10e -4
N 10e -3
O 10e -2
F 10e -1
Ne 10e 0
4. How can you determine if an element is a nonmetal, metal, or metalloid.
See if it is conductive, malleable, sometimes metallic luster –metals
If brittle, non-conductive, low melting point –nonmetals
If it has some properties of each above -metalloid
5. List the properties of metals
Malleable
Conductive
Usually solids at room temperature
High melting point
Tend to give away electrons and become positive cations
6. List the properties of nonmetals
Brittle
Non conductive
Low melting points
Often gas at room temperature
Tend to gain electrons and become negative anions
7. List the properties and location of the alkali metals
Column (group 1) left side of periodic table
One valence electron
Most reactive metal
Soft & silvery
React with air and water
Not found in pure state in nature
Conductive and Malleable
8. List the properties and location of the alkaline earth metals
Group 2
2 valence electrons
Very reactive but not quite as much as alkali metals
Conductive
Malleable
9. List the properties and location of the transition metals
Group 3-12
Become less like metals and more like non-metals going across periods left to right
Conductive
Malleable
10. List the properties and location of the halogens
Group 17
7 valence electrons
Most reactive non-metals
Low melting points
Not conductive
11. List the properties and location of the noble gases
Group 18
8 valence electrons
Stable
Non-reactive
Gases