1. The average path an electron takes around an atom is called its _______________.
2. The lowest possible energy of an electron is referred to as its ___________________.
3. If an electron is raised to an energy level higher than its
normal energy level, it is said to be in
a(n) ___________________ state.
4. The atomic _______________ tells the number of protons in an atom.
5. The atomic _______________ is equal to the number of protons and neutrons in an atom.
6. A(n) _________________ is a form of an element with the same
atomic number but a
different atomic mass than the element it
is being compared with.
7. The electrons found in the outer energy level of atoms are called _______________ electrons.
Choose the answer which best completes the following statements or answer the following questions.
1. Which subatomic particle has a negative charge? (1.) proton (2.) neutron (3.) electron
2. Which subatomic particle has a positive charge? (1.) proton (2.) neutron (3.) electron
3. What is the atomic mass of a proton? (1.) 1 AMU (2.) 2 AMU (3.) 3 AMU (4.) 0 AMU
4. What is the approximate atomic mass of an electron? (1.) 1 AMU (2.) 2 AMU (3.) 3 AMU (4.) 0 AMU
5. Which subatomic particle is NOT normally
found in the nucleus of the atom?
(1.) proton (2.) neutron
(3.) electron
6. Which subatomic particle has a mass of 1 AMU and
has no charge?
(1.) proton (2.) neutron
(3.) electron
7. Which subatomic particle is located in "a cloud:"
surrounding the nucleus?
(1.) proton (2.) neutron
(3.) electron
8. What is the maximum number of electrons that can
be found in the first energy level of an atom?
(1.) 1 (2.) 2
(3.) 8 (4.) 18
9. What is the maximum number of electrons that can
be found in the second energy level of an atom?
(1.) 1 (2.) 2 (3.)
8 (4.) 18
10. As an electron moves away from the nucleus of an atom, its
energy tends to
(1.) decrease (2.) increase
(3.) remain the same
Part three -- Short Answer Questions
1. Given the neutral atom sodium: (15 pts.)
11Na23
(a.) What is its atomic mass?
(b.) What is its atomic number?
(c.) How many protons does it have?
(d.) How many neutrons does it have?
(e.) How many electrons does it have?
2. Draw a Bohr Model structure for the above atom. (6 pts.)
3. An ion has 16 protons, 19 neutrons, and 18 electrons. (12 pts.)
(a.) What is its atomic mass?
(b.) What is its atomic number?
(c.) What is its charge?
4. Find the gram molecular mass of NaOH (10 pts.)
5. Describe the numbers and kinds of atoms found in the compound
sulfuric acid. The symbol for this
compound is listed below. (4 pts.) H2SO4
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