Download 46 Pd Palladium 106.4

Name_______________________________________________ Date__________________ Period____ Ch4 Pre-assessment
Part I Matching: Match the correct definition to the correct word. Write the correct Number on
the line next to the question.
1. Equal to the number of protons in an atom
________ A. Mass Number
________ B. Atomic Mass
________ C. Atomic Number
2. Equal to the number of protons plus neutrons in an
atom
3. The abbreviation of an element’s name
4. The weighted average of the masses of all the isotopes
of an element
________ D. Chemical Symbol
5. The space of an atom where the protons and neutrons can
________ E. Atom
be found
________ F. Bohr Model
________ G. Isotope
6. An atom with a different number of neutrons than another
atom of the same element
7. This representation of the atom includes a small
________ H. Nucleus
center mass and potential paths of electrons
8. The smallest indivisible unit of an element
________ I. Proton
________ J. Neutron
________ K. Electron
9. A positive subatomic particle
10. A negative subatomic particle
11. A neutral subatomic particle
Part II Multiple Choice: Identify the choice that best completes the statement or answers the
question. Write the correct Upper Case letter on the line next to the question.
_____1. Which of the following has the least mass?
A. Nucleus
C. Proton
B. Neutron
D. Electron
_____2. The neutron’s job is to:
A. Give the atom a negative
charge
B. Keep protons in the nucleus
from repelling
Atomic Structure Pre-Assessment
C. Battle the electrons
D. Give the atom a positive charge
CP Chemistry
Name_______________________________________________ Date__________________ Period____ Ch4 Pre-assessment
_____3. What makes an atom a specific element (identifies it as a specific element) is:
A. the number of protons
C. the number of neutrons
B. the number of electrons
D. the number of protons plus the
number of neutrons
____ 4. What did Democritus, Dalton, Thomson, Rutherford, and Bohr all have in common?
A. They each identified new elements.
B. They each identified new isotopes of atoms.
C. They each contributed to the development of the atomic theory.
D. They each conducted experiments in which particles collided.
_____5. What subatomic particles are found within the nucleus?
A. Electrons only
C. Neutrons and Protons
B. Protons, Electrons and Neutrons
D. None of the above
Part III Fill in: Using the word bank below, fill in the corresponding term in the diagram below:
A. Atomic Number
1.
46
B. Atomic Mass
C. Element Name
4.
Palladium
D. Element Symbol
2.
Atomic Structure Pre-Assessment
3.
Pd
106.4
CP Chemistry
Name_______________________________________________ Date__________________ Period____ Ch4 Pre-assessment
Answer the questions below using the diagram to the left.
P3
N4
N4
a. Identify the element this is? ___________
How were you able to identify the element?
________________________________________________________________________________
b. The atomic number is: _____________
How were you able to determine the atomic number?
________________________________________________________________________________
c. The mass number is: _______________
How were you able to determine the mass number?
________________________________________________________________________________
Draw the Bohr Models of the elements below. Remember to show all your work.
Carbon
Symbol: _________
Atomic Mass:______
Atomic Number: ______
# of Protons: _______ Charge:___
# of Neutrons:______ Charge:___
# of Electrons:______ Charge:___
Argon
Symbol: _________
Atomic Mass:______
Atomic Number: ______
# of Protons: _______ Charge:___
# of Neutrons:______ Charge:___
# of Electrons:______ Charge:___
Atomic Structure Pre-Assessment
CP Chemistry