1. A) Polar B) ionic C) nonpolar D) ionic D) nonpolar
2) HC, HS, HBr, HCl
4) A hydrogen bond is an electrostatic interaction between a hydrogen bonded to an electronegative element and the unbonded electrons of another highly electronegative element.
Thursday, October 1, 2015
Tuesday, September 22, 2015
Homework 9/18/15
1. F: 1s^{2} 2s^{2} 2p^{5}
Cl:1s^{2} 2s^{2} 2p^{6}3s^{2} 3p^{5}
Br:1s^{2} 2s^{2} 2p^{6}3s^{2} 3p^{6} 4s^{2} 3d^{10} 4p^{5}
^{}All of the halogens end with 5 electrons in an outer p shell.
2. Li: 1s^{2} 2s^{1}
Na: 1s^{2} 2s^{2} 2p^{6} 3s^{1}
K: 1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{1}
All of the alkali metals end with a single electron in their outer s shell.
Cl:1s^{2} 2s^{2} 2p^{6}3s^{2} 3p^{5}
Br:1s^{2} 2s^{2} 2p^{6}3s^{2} 3p^{6} 4s^{2} 3d^{10} 4p^{5}
^{}All of the halogens end with 5 electrons in an outer p shell.
2. Li: 1s^{2} 2s^{1}
Na: 1s^{2} 2s^{2} 2p^{6} 3s^{1}
K: 1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{1}
All of the alkali metals end with a single electron in their outer s shell.
Monday, September 21, 2015
Homework 9/17/18
1. First calculate frequency: v = 3.00 x 10^{8} / 4.36 x 10^{7} = 6.88 x 10^{14}
Next multiply by plank's constant: E = 6.88 x 10^{14} /s X 6.626 x 10^{34}Jxs = 4.66 x 10^{19} J
2. The only transition that would result in the emission of light is the first on 3p to 3s.
3. 5.08 x 10^{14}/s and 5.09 x 10^{14}/s
2. The only transition that would result in the emission of light is the first on 3p to 3s.
3. 5.08 x 10^{14}/s and 5.09 x 10^{14}/s
Thursday, September 17, 2015
Homework 9/16/15
1. (4 x 10^{7}/s) v = 3.00 x 10^{8}m/s
v = 7.5 x 10^{7}
^{} 2. 0.5m x v = 3.00 x 10^{8}
v = 6.00 x 10^{9}
3. v = 10^{19}
wavelength = 3 x 10^{11}
v = 7.5 x 10^{7}
^{} 2. 0.5m x v = 3.00 x 10^{8}
v = 6.00 x 10^{9}
3. v = 10^{19}
wavelength = 3 x 10^{11}
Wednesday, September 16, 2015
Homework 9/11/15
1.
2 unpaired electrons
2. 1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{5} or [Ne] 3s^{2} 3p^{5}
3. 1s^{2} 2s^{2} 2p^{6} 3s^{1}
Monday, September 14, 2015
Dimensional Analysis Worksheet
1. 5400 inches into miles.
5400 inches x 1 foot x 1 mile = 0.085 miles
12 inches 5280 ft .
2. 16 Weeks into seconds
16 weeks x 7 Days x 24 hours x 60 minutes x 60 seconds = 9,676,800 seconds
1 week 1 day 1 hour 1 minute
3. 54 yards in mm
54 yards x 3 feet x 12 inches x 2.54 cm x 10 mm = 49,377 mm
1 yard 1 foot 1 inch 1 cm
4. 36 cm/sec. into miles/hour
36 cm x 1 inch x 1 foot x 1 mile x 60 sec. x 60 min = .81 miles/hr.
sec. 2.54 cm 12 inches 5280 ft. 1 min. 1 hr.
5. 1.09 g/ml into lbs./gallon
1.09 g x 1 lb. x 946ml x 4 qts. = 9.08 lbs./gal.
ml 454 g 1 qt. 1 gal.
6.
15 people x 4 slices x 1 pizza x $14.78 = $73.90
1 person 12 slices 1 pizza
7.
28 students x 3 pens x 1 package x $1.44 = $15.12
1 student 8 pens 1 package
8. 13,406,190 pennies x 1 dollar = $134, 061.90
100 pennies
13,406,190 pennies x 4 grams x 1 pound = 118,116.211 lbs.
1 penny 454 grams
5400 inches x 1 foot x 1 mile = 0.085 miles
12 inches 5280 ft .
2. 16 Weeks into seconds
16 weeks x 7 Days x 24 hours x 60 minutes x 60 seconds = 9,676,800 seconds
1 week 1 day 1 hour 1 minute
3. 54 yards in mm
54 yards x 3 feet x 12 inches x 2.54 cm x 10 mm = 49,377 mm
1 yard 1 foot 1 inch 1 cm
4. 36 cm/sec. into miles/hour
36 cm x 1 inch x 1 foot x 1 mile x 60 sec. x 60 min = .81 miles/hr.
sec. 2.54 cm 12 inches 5280 ft. 1 min. 1 hr.
5. 1.09 g/ml into lbs./gallon
1.09 g x 1 lb. x 946ml x 4 qts. = 9.08 lbs./gal.
ml 454 g 1 qt. 1 gal.
6.
15 people x 4 slices x 1 pizza x $14.78 = $73.90
1 person 12 slices 1 pizza
7.
28 students x 3 pens x 1 package x $1.44 = $15.12
1 student 8 pens 1 package
8. 13,406,190 pennies x 1 dollar = $134, 061.90
100 pennies
13,406,190 pennies x 4 grams x 1 pound = 118,116.211 lbs.
1 penny 454 grams
Wednesday, September 9, 2015
Homework 9/8/15
1. 10 gal. x 3.8 Liters = 38 Liters
1 Gal.
2. 200.0 miles x 1.6 Km = 320 Km
1 mile
3. 85 miles x 1 hour x 1 min. x 5280 Feet = 124.7 feet/sec.
1 hour 60 min. 60 sec. 1 mile
1 Gal.
2. 200.0 miles x 1.6 Km = 320 Km
1 mile
3. 85 miles x 1 hour x 1 min. x 5280 Feet = 124.7 feet/sec.
1 hour 60 min. 60 sec. 1 mile
Wednesday, September 2, 2015
Unit 1 Review
1. Draw a simple flow chart outlining
the steps of the scientific method. Include what happens if the experiment does
not agree with the hypothesis.
2. What are the metric units used to
measure length/distance, mass, volume, temperature, and time? What are their
abbreviations?
3. Write the following numbers in
scientific notation.
A. 25,030,000
B. 0.000258
C. 34,003,000,000,000
D. 0.00000000314
4. Do the following conversions.
A. Convert 100 milliliters into liters.
B. Convert 450 grams into milligrams.
C. Convert 320 centimeters into meters.
D. Convert 4 kilograms into grams.
E. Convert 5,930 liters into
milliliters.
5. How many significant figures are in
the following numbers?
A. 422.002
B. 50.20
C. 50,000,000,000
D. 599
E. 93.0
6. Solve the following problems with
answers with the correct number of significant figures
A. 10.5 * 22
B. 60.0 + 22.543
C. 533.215 – 255.01
D. 5586.251 / 5.2
E. 525 + 22.156
F. 22.2 * 562.12
G. 633.1 – 52.256
7. Are the following chemical or
physical changes?
A. Ice melting
B. Gasoline burning
C. Table salt (sodium chloride) dissolving
in water
D. Iron rusting
E. Breaking a glass
F. Protein being digested into amino
acids
8. What are the three subatomic
particles that atoms are made of and what are their charges?
9. If an atom has twenty six protons,
thirty neutrons, and twenty six electrons what is its atomic number? What is
its atomic weight? What element is it? What is its symbol?
10. Which are heavier electrons or
protons?
11. Are the following elements metals, nonmetals or semimetals?
A. Cobalt (Co)
B. Xenon (Xe)
C. Boron (B)
D. Calcium (Ca)
E. Oxygen (O)
F. Tungsten (W)
11. Are the following elements metals, nonmetals or semimetals?
A. Cobalt (Co)
B. Xenon (Xe)
C. Boron (B)
D. Calcium (Ca)
E. Oxygen (O)
F. Tungsten (W)
Homework 9/1/15
Classify the following elements as metals, nonmetals, or metaloids:
A. Calcium  metal
B. Florine  nonmetal
C. Germanium  metaloid
D. Palladium  metal
E. Xenon  nonmetal
To what group do the following elements belong?
A. Sodium  Group 1 Alkali Metal
B. Zirconium  Group 4 Transition Metal
C. Cerium  Lanthanide
D. Iodine  Group 17 Halogen
E. Krypton  Group 18 Noble Gasses
A. Calcium  metal
B. Florine  nonmetal
C. Germanium  metaloid
D. Palladium  metal
E. Xenon  nonmetal
To what group do the following elements belong?
A. Sodium  Group 1 Alkali Metal
B. Zirconium  Group 4 Transition Metal
C. Cerium  Lanthanide
D. Iodine  Group 17 Halogen
E. Krypton  Group 18 Noble Gasses
Tuesday, September 1, 2015
Homework 8/31/15
1. A chemical change involves a chemical reaction where new substances are created. In a physical change the substance or substances involved stay the same, just change form.
2. A. Physical Change
B. Chemical Change
C. Physical Change
D. Chemical Change
2. A. Physical Change
B. Chemical Change
C. Physical Change
D. Chemical Change
Friday, August 28, 2015
Homework 8/27/15
1. Different isotopes of an element have different numbers of neutrons.
They have the same number of protons and electrons.
2. Atomic number is equal to the number of protons in an atom.
Mass number is equal to the number of protons and neutrons in an atom.
3. Protons and neutrons are located in the nucleus of an atom. Electrons circle around the nucleus forming a sphere.
They have the same number of protons and electrons.
2. Atomic number is equal to the number of protons in an atom.
Mass number is equal to the number of protons and neutrons in an atom.
3. Protons and neutrons are located in the nucleus of an atom. Electrons circle around the nucleus forming a sphere.
Thursday, August 27, 2015
Homework 8/26/15
How man significant figures in the following numbers:
25,000 = 2
17.06 = 4
135.50 = 5
Do the following problems with the correct number of significant figures in the answer:
75.2 x 0.0032 = 0.24
52.7 + 24 = 77
25,000 = 2
17.06 = 4
135.50 = 5
Do the following problems with the correct number of significant figures in the answer:
75.2 x 0.0032 = 0.24
52.7 + 24 = 77
Wednesday, August 26, 2015
Homework 8/25/15
Convert to scientific notation:
32,500 = 3.25 x 10^{4}
.00000147 = 1.47 x 10^{6}
45,000,000 = 4.5 x 10^{7}
Convert to standard notation
1.73 x 10^{5} = 0.0000173
2.37 x 10^{8} = 237,000,000
5.32 x 10^{3} = 0.00532
32,500 = 3.25 x 10^{4}
.00000147 = 1.47 x 10^{6}
45,000,000 = 4.5 x 10^{7}
Convert to standard notation
1.73 x 10^{5} = 0.0000173
2.37 x 10^{8} = 237,000,000
5.32 x 10^{3} = 0.00532
Monday, August 24, 2015
Monday, August 17, 2015
Syllabus
Chemistry –
Mr. Stevens – Room 16 – Coalinga High School
email: emstevens22@gmail.com
email: emstevens22@gmail.com
Welcome to chemistry class. I am
looking forward to exploring the world of matter and its chemical changes with
you. This is a rigorous class that requires students to study and complete homework
assignments in a timely manner. In order to ensure your success in this class I
have prepared this syllabus for you which details classroom rules, the
materials that you will be required to have, and outlines our class policies.
Class Rules/Consequences:
Students
are expected to be to class on time in their assigned seats and prepared to
begin when the bell indicating the class is beginning rings. (Please see below
for tardy policy)
Students
are expected to dress and behave in an appropriate manner.
Students
are expected to pay attention, follow directions, and stay on task.
Students
who choose to behave in a manner that is inappropriate and/or disruptive will
be dealt with in the following manner
1st
offence – Verbal warning.
2nd
offence – Conference with student
3rd
offence – Phone call and/or note to parent
4th
offence – Referral to counselor, followed by parent conference
5th
offence – Referral to assistant principal
Repeated
offences will be dealt with possible removal from class with a drop “F” grade.
Please
see the Student Handbook (page 21) for further details.
Tardy Policy:
Students are expected to be in their
seats and ready to work when the class bell rings and students will be
considered tardy if they are not in their seats when the tardy bell rings. If a
student is late to class because of a counseling appointment, finishing a test
in another class, or another legitimate reason the tardy will be excused as
long as the have a pass or note to verify the reason of their tardy. The tardy
policy outlined in the student handbook will be enforced.
Cheating Policy:
In
this class there is a zero tolerance policy for cheating. If a student chooses
to cheat or copy someone’s work, the student will receive a zero for that
assignment/test/laboratory, an administrative referral, in school suspension,
and a parent teacher conference. Providing someone with your work or allowing
them to copy your work (knowingly or unknowingly) is also considered cheating
and will be dealt with in the same manner. If the cheating continues after the
initial incident it will be dealt with in the same manner and punishment will
include 13 days of inschool suspension. A third incident of cheating will be
dealt with by removal from class with a drop “F” grade and 13 days suspension.
Please
refer to the academic honesty policy found in your student handbook for more
information.
Homework/Makeup Work Policy:
Generally
homework will be assigned daily. Students are expected to complete their
assignments in a timely manner. Homework will be checked for completeness (not
correctness) and stamped at the beginning of each daily period. At the end of
each unit (the day of the unit test) student’s stamped homework assignments will
be stapled together and turned in before the test begins. Generally each
homework assignment will be worth 5 points. Unstamped, but completed, homework
assignments may be turned in with the packet and will receive half credit.
Because
homework is only checked for completeness (and not correctness) students may
take it upon themselves to make sure that they have the correct answers to
their homework so that they will be prepared for the unit test. Homework
solutions will be posted on the class blog (http://stevenschemistryclass.blogspot.com)
no sooner than the day after the homework is due. The class blog will also often include
information about upcoming class material so it is a good idea to check it
regularly so that you can stay current.
In the event of an
excused absence, it is the student’s responsibility to make sure that they
complete any missed assignments. Students with excused absences will have as
many days as they have missed to get their missed homework assignments checked
for completeness and stamped. This policy is for excused absences only.
Students with homework missing from days with unexcused absences will not be
checked for points. Students may turn in unstamped (not completed on time)
assignments at the time of the test and they will be given half credit.
Classroom Seating:
Every other month students will
randomly be assigned classroom seats. The classroom seats are set into groups
of four. These groups will be the groups that will work together on group
assignments and laboratory activities.
Textbook and required materials:
Text: Prentice Hall Chemistry
California by Wilbraham, Staley, Matta, and Waterman; Pearson Publishing (2007)
Students are expected to bring the following to class each day:
Chapter
notes: For each unit students will receive a packet of prepared notes. These
notes follow the PowerPoint presentations used in class and students will be
expected to fill in and use these notes for study. If the student fails to
bring the note packet to class a new packet will not be provided. If a student
loses their chapter note packet a new packet may be purchased for the price of half
their homework points for that unit. A second replacement packet will lower the
student’s homework grade to on fourth of the points normally earned. Etc. These
notes will also include homework assignments, but students are expected to
complete their homework on a separate piece of blank notebook paper. A single
piece of notebook paper may be used for as many homework assignments that will
fit onto the paper and still be easily readable.
Writing
Implement: Students must bring a writing implement to class each day. Students
may choose to use pen or pencil. In the event that a student fails to bring a
writing implement a pencil may be borrowed for the period.
Blank
Notebook Paper: Students will need to bring blank notebook paper (either spiral
or regular notebook paper are fine) in order to complete warmups, homework
assignments, and laboratory reports. As mentioned above a single piece of paper
may be used for more than one homework assignment. Likewise, I will endeavor to
return warmups in a timely manner so that a single piece of paper may be used
for a week’s worth of warmup problems.
Calculator:
Students should have a calculator in order to do the math required for
chemistry problems. Scientific calculators are highly recommended, but any
calculator with four basic operations and square root functions will be
sufficient. Students may use cell phones as calculators on nontest days. Cell
phones will not be permitted to be used as calculators on test days and will be
temporarily taken away if they are seen during or immediately following a test.
In order for the cell phone to be returned the student’s parents must contact
Mr. Stevens.
Classroom Electronics Policy:
Students are allowed to bring cell
phones to class on nontest days as they will be used in cell phone polls at
the beginning of class on many days. Cell phones may also be used as
calculators on nontest days (see Textbooks and Materials above). Cell phones
should not be seen on test days (see Textbooks and Materials above).
Other
electronic devices (i.e. MP3 players, Ipods, etc.) are not permitted to be used
in class at any time and will be taken away if seen. In order that they may be
returned the student’s parents must contact Mr. Stevens.
Grading Policy:
Grades earned by students will be
computed using the following weighted formula:
30%
Homework Assignments
20%
Laboratory Reports
40%
Unit Tests/Final Test
10%
Participation
Homework:
As mentioned above homework will be assigned, checked for completeness, and
stamped on a daily basis. At the end of each unit homework packets will be
turned in before beginning the unit test. Homework problems should be completed
on a separate piece of paper and not the unit note packet. Unstamped
(unchecked) homework assignments may be turned in with the homework packet for
half credit. Homework packets will be turned in before unit tests. Late
homework packets will be accepted if the student has missed the test day due to
an excused absence.
Laboratory
Reports: We will regularly be doing laboratory experiments. Laboratory reports
should be turned in by the end of the laboratory period, unless otherwise
indicated. If through no fault of your own you are unable to complete a
laboratory report on time arrangements may be made. This will happen on a
casebycase basis and is subject to teacher approval. If you are unable to
finish your laboratory report due to your own inactivity or goofing around when
you should have been working no accommodations will be made.

Unit Tests: Generally unit tests will occur every other Friday. This schedule
may change due to holidays and vacations. Students will be notified at least a
week in advance if there is any change in the testing schedule.
Participation
grades are largely taken from daily warm up quizzes. 2 points will be given for
correctly solving the daily warm up problem. 1 point will be given for
attempting the warm up problem or solving it incorrectly. In the event of an absence students may make
up the warm up problem getting it either from another student or from the Mr.
Stevens.
Overall grades will be
assigned using the following formula:
A+ 100%97%
A
97%93%
A 93%90%
B+ 90%87%
B+ 90%87%
B 87%83%
B
83%80%
C+
80%77%
C
77%73%
C
73%70%
D+
70%67%
D
67%63%
D
63%60%
F
<60%
Laboratory Safety:
Laboratory safety is important and no
student will be permitted to do experiments in the laboratory until they have
passed the laboratory safety quiz, which will be given during the first week of
school. In order to pass the laboratory safety quiz students must score greater
than 60%. In the laboratory handle all equipment properly and follow the given
directions. Do not do your own experiments. Report any accident, injury, or
problems to Mr. Stevens immediately so that it may be dealt with. At the end of
the laboratory session please leave the laboratory/classroom as you found it,
with the lab table clear and any equipment returned to its proper place. There
is no horseplay or goofing off in the laboratory. Due to the inherent danger of
working in some laboratory situations inappropriate behavior will not be
tolerated.
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