Fall 2014 Chemistry Mid-Term Review
Dimensional Analysis
1km= .621 miles; 5280 ft = 1 mile
1.
A.
B.
C.
Convert
7820 ft =__________ meters
90,562 inches=___________miles
522 miles=_________km
Scientific Notation and Sig Figs
Convert to Scientific Notation:
1. 500
2. 3000
3. 565000
4. .000657
Convert to Standard Notation:
1. 6.5 x 10⁴
2. 8.65 x 10-⁶
3. 1.6 x 10⁵
Calculate using the correct Scientific Notation
1. (4 x 105) x (3 x 10-8)
2.
1.65 x 107 + 2.32 x 10 10
3. 2.4 x 108/1.2 x 10-5
Sig Fig Problems:
6.657 x 6
Calc. Ans. =
Sig Fig Ans. =
75657/752
Calc. Ans. =
Sig Fig Ans. =
65.7652 + 76.27
Calc. Ans. =
Sig Fig Ans. =
0.025 -0.0012
Calc. Ans. =
Sig Fig Ans. =
How many Sig Figs in each number:
1. 9000
2. 85963
3. 0.0005
Interpreting Data
1. Answer these questions about the graph at the right:
a. What is the dependent variable on this graph?
b. Does the price per bushel always increase with
demand?
c. What is the demand when the price is 5$ per
bushel?
d. How much
rain fell in
Mar of 1989?
e. How much
more rain fell
in Feb of 1990
than in Feb of
1989?
f. Which year had the most rainfall?
g. What is the wettest month on the graph?
4. 8.6065
Define and give examples of the following using the textbook pages 36-37
and 50.
Chemical PropertyPhysical PropertyIntensive PropertyExtensive Property-
Identify each of these properties as intensive or extensive:
a.
b.
c.
d.
e.
f.
g.
Mass
Color
Weight
Volume
Density (which is mass divided by volume)
Ability to react
Flammability
For each of the following statements, indicate whether it refers to a solid,
liquid, or gas.
a.
b.
c.
d.
e.
f.
Particles vibrate in place
Particles are moving past each other at high speeds
Particles are close together but able to move past each other
Particles have the most attraction for each other
Particles have little to no attraction for each other
This state of matter have a definite shape and definite volume
Label each picture as a solid liquid or gas.
Classify each of the following changes as physical or chemical changes:
a. Tearing paper:
b. Combining yellow and blue food coloring to make green:
c. Combining 2 clear solutions to obtain a clear solution and a yellow precipitate:
d. Combining water and sodium to get sodium hydroxide. The process produces heat,
light, and sparks:
e. Combining zinc and hydrochloric acid to get hydrogen gas and zinc chloride:
f. Filtering dirt out of water:
g. Boiling water:
Label each as Homogenous Mixture or Heterogenous Mixture
A.
B.
C.
D.
E.
F.
G.
Chocolate Chip Ice Cream
Paint
Alcohol
Bird Seed
Soil
Kool –Aid
Sugar-Water
Draw the Lewis Dot Structures for the following elements.
Lithium
Calcium
Aluminum
Krypton
Oxygen
Chlorine
Be able to identify these atomic models.
Fill in the missing information for each chart below.
Name of Compound
Formula
Name of Compound
Ammonium Phosphide
Potassium Phosphate
CuSO4
Calcium Chloride
LiF
MgI₂
Pb(CrO4)2
Cesium Acetate
Strontium Chromate
Copper (I) Oxide
Iron(III) acetate
Fe2O3
Co₂(CO₃)₃
Write the formula for each Acid or Base
1.
2.
3.
4.
5.
Formula
Nitrous Acid
Aluminum Hydroxide
Hydroselenic Acid
Phosphoric Acid
Strontium Hydroxide
Lithium Hydroxide
Write the name for each Acid or Base
1.
2.
3.
4.
HCl
HNO3
H2CO3
Ca(OH)2
Mole Conversions/Percent Compostion/Empirical and Molecular Formula
1. How many atoms are there in 6.3 mol of Copper?
2. How many atoms are there in 1.5 mole of Neon?
3. How many grams of Calcium are there in 2.6 x 1013 atoms?
4. How many atoms of Oxygen are there in 65.3 grams of Oxygen?
5. What is the number of moles in 3g of AsH3?
6. What is the number of moles in 12.5g of Calcium Sulfate?
7. What is the % composition of Oxygen in BaCrO4?
8. What is the % composition of Carbon in C9H8O?
9. What is the empirical formula of a compound that is 94.1% O and 5.9% H?
10. What is the molecular formula of a compound with a molar mass of 60g and the empirical
formula of CH4N?
Nuclear Chemistry
Compare and contrast fusion and fission using pages 760 & 763 in your text book.
Compare and contrast alpha, beta and gamma decay using pages 749-751 in your
text book.
Fill in the missing blanks:
218
84Po
1.
222
86Rn
→
2.
142
61Pm
+ __________ →
3.
66
29Cu
4.
0
−1e
→
+
66
30Zn
81
37Rb
+ __________
142
60Nd
+ ___________
→ ___________