1.
Name an extensive property of aluminum (Mass or Volume)
2.
Name an intensive property of aluminum (Density, Conductivity, Luster)
3.
What units are used to express the mass of subatomic particles? Amu’s
4.
What do the letters in this abbreviation refer to? Atomic Mass Unit
5.
Which particle or particles have a mass of approximately 1 amu? Protons & Neutrons
6.
Which particle or particles account for most of the mass of the atom? Protons & Neutrons
7.
Which particle or particles account for most of the volume of the atom? Electrons
8.
The sum of the protons and the neutrons in the nucleus of atom. Mass Number
9.
The weighted average of the mass of all of the isotopes of an element. Average Atomic Mass
10.
All atoms of the same element have the same number of protons.
11.
What is formed when the # of electrons in an atom does NOT equal the # of protons? ion
12.
Two atoms have a different number of neutrons if they are isotopes of each other.
13.
In an atom, the number of protons must equal the number of electrons.
14.
The atomic mass of element X is 43.98amu. What is the probable mass number of the most abundant isotope of element X? 44
15.
Atomic number is equal to the number of protons in the nucleus of an atom.
16.
The number of protons in the nucleus of an atom identifies the element.
17.
What is the charge on the most common ion formed by:
Al + 3 Sr + 2 Rb + 1 O 2 N 3

An atom has 9 protons, 9 neutrons, and 10 electrons.
18.
Is this an atom or an ion? Ion
19.
What is the net charge, if any? -1
20.
What is the mass number? 18 amu
21.
What is the atomic number? 9
22.
What is the isotope name of this atom? Fluorine - 18
23.
What is the nuclear symbol of this atom?
18
9
F
ATOMIC MASS CALCULATIONS
24.
In nature, 95.72% of all calcium is Ca-40, 4.04% is Ca-41, and 0.24% is Ca-39.
Calculate the average atomic mass of calcium.
40 x 0.9572 = 38.29
41 x 0.0404 = 1.66
39 x 0.0024 = 0.094
40.04 AMU
25.
Calculate the atomic mass of magnesium, given the following percentages of magnesium isotopes in nature.
Magnesium – 24 X .7899 = 1 8 . 9 8
Magnesium – 25 X .1000 =
Magnesium – 26 X .1101 =
2 . 5 0 0
2 . 8 6 3
2 4 . 32 0 AMU
PERIODIC TABLE:
26.
Identify as Representative, Transition, or Inner-transition elements:
A. Be - Representative B. Fe - Transition
C. Pa - Inner-transition element D. Kr - Representative
27.
identify the following elements as metals, non-metals, or metalloids:
A. Yb(70) Metal B. Zn (30) Metal
C. Te (52) Metalloid D. O (8) Non-metal

28.
Who developed the first periodic table? Dmitri Mendeleev
29.
In what order was this first table arranged? By increasing atomic mass
30.
Who changed the periodic table to its current form? Moseley
31.
The modern periodic table is arranged in order of increasing atomic number.
32.
A horizontal row on the periodic table is called a period.
33.
A group on the periodic table may also be called a family (column).
34.
What is an anion? Atom with a negative charge – more electrons than protons
35.
Will metals or non-metals form cations? Metals
36. Complete the following table:
Element Group # Family Name
# of valence electrons
Dot diagram of atom
Dot diagram of ion
Charge of most common ion
Cl 17 Halogens 7 1-
Sr
Li
2
1
Alkaline Earth
Metals
Alkali Metals
2
1
Sr 2+
Li 1+
2+
1+
B 13 Boron Family 3 B 3+ 3+
Ar 18 Noble Gases 8 N/A 0
Te 16 Oxygen Family 6 2-
P 15 Nitrogen Family 5 3-

37.
Do the following statements refer to “metals” or “non-metals”? a.
Tend to lose electrons when forming ions. Metals b.
Tend to gain electrons when forming ions. Non-metals c.
Tend to form positive ions. Metals d.
Tend to form negative ions. Non-metals e.
Form cations. Metals f.
Tend to have few valence electrons. Metals g.
Tend to have strongly held valence electrons. Non-metals h.
Malleable Metals i.
Dull Non-metals j.
Reactive with acid Metals k.
Non - Conductor of heat and electricity Non-metals l.
Brittle Non-metals m.
Lustrous Metals
39.Is hydrogen a.
A representative element? Yes b.
A metal? No c.
An alkali metal? No

40. COMPLETE THE FOLLOWING TABLE
ISOTOPE
SYMBOL
ISOTOPE NAME
Mass
Number
Atomic
Number
# OF
Protons
# OF
Electrons
# OF
Neutrons
Charge
Atom or ion
17
8
O
70
31
Ga
80
35
Br
25
12
Mg
40
20
Ca
56
26
Fe
120 Sn
50
Oxygen-17
Gallium - 70
17
70
Bromine - 80
Magnesium -
25
Calcium -40
Iron - 56
Tin - 120
80
25
40
56
120
8
31
35
12
20
26
50
8
31
35
12
20
26
50
9
39
45
13
20
30
70
10
31
36
10
18
26
46
-2 Ion
0 Atom
1- Ion
2+ Ion
2+ Ion
0 Atom
4+ Ion