Name: __________________________________________________________
Date: ______________________
Directions:
1.
You need to be sure to go over ALL of the pages in your classwork section; these notes will help you
complete this study guide.
2. Try to complete as much as you can without looking at your notes. After that, go back through your
notes to help you fill in the rest.
A. Fill in the missing information in the chart to the
right.
B. Use the electron shells below to draw a model of a
Nitrogen atom.
Particle
Proton
Location
Inside nucleus
Charge
Positive
Neutron
Inside nucleus
Neutral
Electron
Outside nucleus
Negative
Use the following key to help you
complete the model:
Key:
= protons = 7
= electrons = 7
= neutrons = 7
C. Now use the electron shells below to draw a model of a Flourine atom.
Key:
= protons = 9
= electrons = 9
= neutrons = 10
a. Circle the part of the atom that makes these two elements VERY different from each other?
PROTONS
NEUTRONS
ELECTRONS
D. Use your periodic table to fill in the missing information below.
This is the ATOMIC NUMBER.
The atomic number tells us the number of
This is the
PROTONS and ELECTRONS
Chemical SYMBOL
This is the
This is the ATOMIC MASS.
This tells us the number of protons and neutrons
in the atom.
Element NAME
E. Use your periodic table to fill in the missing information below.
Chemical Name
Chemical
Symbol
Atomic
Number
Atomic Mass
Protons
Electrons
Neutrons
Potassium
K
19
39
19
19
20
NICKEL
Ni
28
59
28
28
31
NEON
Ne
10
20
10
10
10
F. A chemical formula is a way of writing a compound to tell us what ELEMENTS are in the compound.
a. Look at the following chemical formulas and identify what ELEMENTS are in the compound.
b. Then, tell us how many ATOMS of each element are present in the compound.
N2O
H2SO4
C8H10N4O2
Nitrogen
# of
Atoms
2
Hydrogen
# of
Atoms
2
Oxygen
1
Sulfur
Oxygen
Elements
Elements
Carbon
# of
Atoms
8
1
Hydrogen
10
4
Nitrogen
4
Oxygen
2
Elements
G. Silver Nitrate is one of the compounds we used in our lab.
a. Silver Nitrate has the following elements in it, in this exact order:
i. One atom of Silver (Ag)
ii. One atom of Nitrogen (N)
iii. Three atoms of Oxygen (O)
b. Use the above information to write the CHEMICAL FORMULA:
AgNO3
H. Using the idea bank below, fill in the following venn diagram with information about physical and chemical
changes.
Physical Changes
Chemical Changes
True of Both
B
A
H
E
C
G
D
F
IDEA BANK
A. A gas is produced
E. Change in size
B. Change in shape
F. Can see bubbling occur
C. Cannot be easily reversed
G. Change in state
D. New substance is formed
H. Change in matter
I.
A chemical equation is a way to represent a chemical change.
a. Using the chemical equation below,
DRAW A CIRCLE
DRAW A SQUARE around the PRODUCTS.
Zn
+
HCl
around the REACTANTS and
ZnCl2
+
H2
J. Use the chart below to fill in the top 3 elements found in each of these locations. Use the graphs/charts below
to help you fill in the missing information.
Earth’s Atmosphere
Earth’s Crust
Human Body
Earth’s Ocean
Top Element # 1
Nitrogen
Oxygen
Oxygen
Oxygen
Top Element # 2
Oxygen
Silicon
Carbon
Hydrogen
Top Element # 3
Argon
Aluminum
Hydrogen
Chlorine