1.
Particles of matter that make up the nucleus of the atom are ___.
A. 
B. 
C. 
D. 
2.
All of the mass of the atom is in the ___.
A. 
B. 
C. 
D. 
3.
Horizontal rows of the periodic table are called ___.
A. 
B. 
C. 
D. 
4.
Atoms of the same element with different numbers of neutrons are called ___.
A. 
B. 
C. 
D. 
5.
Elements that are gases, are brittle, and are poor conductors at room temperature are ___.
A. 
B. 
C. 
D. 
6.
A certain atom has 38 protons, 38 electrons, and 50 neutrons. Its mass number is ___.
A. 
B. 
C. 
D. 
7.
Why are the noble gases stable?
A. 
They have a full outer shell of electrons
B. 
C. 
They do not have any electrons
D. 
They were used by monarchies throughout history
8.
An atom that has gained 2 electrons and is now positively charged is specifically called a(n) ___.
A. 
B. 
C. 
D. 
9.
Elements that fall along the "staircase" on the periodic table and have properties like metals and non-metals are called___.
A. 
B. 
C. 
D. 
10.
What period and group (in that order) is barium found in?
A. 
B. 
C. 
D. 
11.
Given the following information, Iodine - 128, how many electrons are present?
A. 
B. 
C. 
D. 
12.
An atom that has gained two additional electrons would have a charge of ___.
A. 
B. 
C. 
D. 
13.
Argon is considered a noble gas and non-reactive. What makes argon such a stable atom?
A. 
8 electrons in outer shell
B. 
More positive thatn negative charge
C. 
More negative than positive charge
D. 
14.
An atom found in period 4, group 7 would be considered a non-metal.
15.
In an atom, the atomic number is useful because a physical science student can determine the number of protons and electrons.
16.
If Tellurium - 127 were to lose 4 neutrons, the new mass would be 122.
17.
Oxygen has 5 valence electrons.
18.
Sodium has 11 electrons total, but only 2 electrons in its first energy level.
19.
The elements on the modern Periodic Table are arranged by decreasing atomic number.
20.
Electrons farthest from the nucleus have a higher level of energy as compared to other electrons in the atom.
21.
Nuclear fusion occurs naturally in the sun.
22.
The three subatomic particles are ___.
A. 
Protons, neutrons, and electrons
B. 
Photons, ions, and isotopes
C. 
Nucleus, electrons, and photons
D. 
Protons, nucleons, and quarks
23.
The mass of an electron is so small, we sometimes say it's mass is negligible.
24.
Two isotopes of hydrogen are hydrogen-2 and hydrogen-3. These isotopes differ from one another by one proton.
25.
The region around the nucleus occupied by the electrons is called the negative zone.