Name:___________________
Date:___________
Chapter 6 & 7 Test Study Guide
1. Identify each element as a metal, nonmetal, or metalloid.
a. Iron – metal
b. Germanium – metalloid
c. Silicon – metalloid
d. Chlorine - nonmetal
e. Magnesium – metal
f. Nitrogen - nonmetal
2. Identify each element as a solid, liquid, or gas
a. Bromine - liquid
b. Magnesium - solid
c. Nitrogen - gas
d. Krypton - gas
e. Copper - solid
3. What are the properties of metals and nonmetals?
Metals – conduct electricity, ductile, malleable
Nonmetals – poor conductors
4. Who organized the elements into a periodic table in order of
increasing atomic mass?
Mendeleev
5. What are the specific names of the following groups?
a. Group 1A – alkali metals
b. Group 2A – alkaline earth metals
c. Group 7A - halogens
d. Group 8A – noble gases
6. Name an element that would have properties similar to Potassium
(K).
Li, Na, Rb, Cs, or Fr
7. What is an ion? Cation? Anion?
Ion – atom or group of atoms that loses or gains electrons
Cation – atom that loses 1 or more valence electrons
Anion – atom that gains 1 or more valence electrons
8. What is an ionic bond?
Electrostatic forces that hold ions together in ionic compounds
9. Classify each of the following as a cation or an anion.
a. Na+ - cation
b. I- - anion
c. Ca2+- cation
d. O2- - anion
10. How many valence electrons are in the following atoms?
e. Calcium - 2
f. Sulfur - 6
g. Silicon - 4
h. Chlorine - 7
11. How many electrons are in the highest occupied energy level of atoms
in Group 3A elements?
3
12. Draw the Lewis Dot Structures for the following atoms:
a.
b.
c.
d.
Calcium •Ca•
Sulfur (S with 6 valence electron dots around it)
Silicon (Si with 4 valence electron dots around it)
Chlorine (Cl with 7 valence electron dots around it)
12. What is the octet rule?
In forming compounds, atoms tend to achieve the electron
configuration of a noble gas.
13. What is the charge of the ions formed by elements in the following
groups to achieve a noble-gas electron configuration?
a. Group 1: +1
b. Group 2: +2
c. Group 6: -2
d. Group 7: -1
14. How many electrons does oxygen gain to achieve a noble-gas electron
configuration?
2
15. What is the formula of the ion formed when nitrogen achieves a noblegas electron configuration?
N316. Write the formula of the ionic compounds formed when the following
elements combine.
a. Sodium and Bromine: NaBr
b. Sodium and Sulfur: Na2S
c. Calcium and Iodine: CaI2
d. Aluminum and Oxygen: Al2O3
e. Barium and Chlorine: BaCl2
14. Ionic compounds are normally in which physical state at room
temperature?
Solid
15. Why are metals electrical conductors?
The valence electrons of atoms in a pure metal can be modeled as a
sea of electrons. The electrons can flow freely in the metal.
16. What is an alloy? Why are they important?
Alloys are mixtures of two or more elements, at least one of which is
a metal. Alloys are important because their properties are often superior to
those of their component elements.