Download Practice Test - Riverdale Middle School

Practice Test
pg. 60
Atom, Periodic Table & Bonding
1. Draw and label the 5 parts of an atom.
2. Describe the subatomic particles that make up an atom. Be specific about their charge, mass, and location.
a. ____________________________________________________________________________________
b. ____________________________________________________________________________________
c. ____________________________________________________________________________________
3. Matching
1.________ J.J. Thomson
A. electrons move in orbits or energy levels around the nucleus like planets orbit the sun;
energy levels contain a certain number of electrons
2.________ Current Model
B. atoms are mostly empty space; DISCOVERED NUCLEUS; electrons circle the
nucleus
3.________ Democritus
C. based on Bohr model except electrons orbit in random paths and are found in the
electron cloud
4.________ Niels Bohr
D. described atom as invisible, indestructible, solid sphere, like a marble; atom could not
be broken down
5.________ John Dalton
6.________ Ernest Rutherford
E. matter cannot be broken down indefinitely; you get to a piece that cannot be divided;
he called that the atom (atomos); uncuttable
F. “plum-pudding” model; atom is a mass of positive material with negative electrons
scattered through it; DISCOVERED ELECTRONS
Draw a picture of their model
4. Label the element key
36
Kr
Krypton
83.80
5. How is the periodic table arranged? What is the difference between a row and a column on the periodic table
and what are they each called?
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
6. What is a compound-______________________________________________________________________
Name the elements in each compound and the number of atoms of each element:
CO2 ________________________________________________________________________________________________________________________________
Ba(NO3)2 ________________________________________________________________________________________________________________________
7. Complete the table
Element
Bromine (Br)
Tellurium (Te)
Germanium (Ge)
Argon (Ar)
8.
Atomic
Number
35
Mass
Number
80
Number of
Protons
Number of
Neutrons
52
76
73
32
18
22
Complete the following information for Chlorine:
Atomic #
Mass#
__17__
__35__
Draw a Bohr Diagram
Draw a Lewis Structure
Cl
# of Protons ______
Number of
Electrons
Complete the following information for Fluorine:
Atomic # __9__
Draw a Bohr Diagram
Mass#
__19__
# of Protons ______
Draw a Lewis Structure
F
# of Neutrons ______
# of Electrons ______
# of Neutrons ______
# of Electrons ______
9. Complete the chart
Element
Atomic Number
Total # of Electrons
# Valence Electrons
# of Electrons needed
to gain or lose (to fill
outer shell)
Oxidation Number
Magnesium
Hydrogen
Oxygen
Iodine
Potassium
10. An atom that gains one or more electron will have a __________________ charge and is called a(n) ___________________.
An atom that loses one or more electron will have a ____________________ charge and is called a(n) ___________________.
11. What is a covalent bond? ________________________________________________________________________
Illustrate the following:
2 Hydrogen + Oxygen
Hydrogen + Hydrogen
12. What is an ionic bond? ___________________________________________________________________________
Illustrate the following:
Magnesium + Iodine
Potassium + Iodine