HW #4 for 8/31
pg. 21 #1-10
Quark
Quark in his Halloween costume
Saturday, August 29, 2015
Scientific Methods Lab Part 1: Toilet Paper
Scientific Methods Lab: Part
1---Toilet Paper
Problem
Which toilet paper has the greatest
strength when wet? Some scientists work for consumer testing agencies to help
evaluate the effectiveness of consumer products. Four brands of toilet paper
are provided for evaluation. All groups will perform the same standard
procedure. This experiment is just one possible way to determine which brand of
toilet paper is strongest when wet.
Observations
Before making a hypothesis about
which brand of toilet paper will be the strongest when wet, the four brands of
toilet paper need to be examined. Get one square of each brand of toilet paper
and make as many observations as possible about the squares. Observations may
include the paper’s texture, thickness, fibers, etc. . .
1. Make your observations about
each type of toilet paper.
A—
B—
C—
D—
Hypothesis
2. Based upon the observations of the four brands
of toilet paper, create a hypothesis about which brand of toilet paper will
have the greatest strength when wet. (e.g., We think that brand X toilet paper
will be the strongest when wet because . . .).
Procedure
3. Write
out the steps in our procedure how we will test the toilet paper. You may number them the steps, but please
describe them completely with details.
4. Data Table
|
Toilet
Paper
|
Trial
#1
|
Trial
#2
|
Trial
#3
|
Average
|
|
Brand
A
|
|
|
|
|
|
Brand
B
|
|
|
|
|
|
Brand
C
|
|
|
|
|
|
Brand
D
|
|
|
|
|
Conclusion
5. Write a
conclusion based on the data gathered from the experiment. Was your hypothesis
correct? Why or why not do you think your hypothesis was supported?
6. List possible sources of
error in this experiment. What ways can the procedure be improved to give more
reliable data? Note: During any experiment, it is good practice to
record if and where any errors or inconsistencies may have occurred and whether
they are equipment-related.
7. Write your names and period
on a Post-It note (ask Ms. Cotta for one) and write how many pennies your
toilet paper held. Then attach it to the
chart paper at the front of the room.
8. Create a bar graph with the
brand of toilet paper on the x-axis and the average number of pennies held on
the y-axis. (EXTRA CREDIT)
Wednesday, August 26, 2015
Monday, August 24, 2015
HW #2 for 8/25
1) HW #2 pg. 14 #2-4, pg. 17 #1-3
2) Any paperwork that is owed (syllabus, lab safety, questionnaire) turn in tomorrow--paperwork not turned in will result in no lab this week!
2) Any paperwork that is owed (syllabus, lab safety, questionnaire) turn in tomorrow--paperwork not turned in will result in no lab this week!
Sunday, August 23, 2015
HW #1 for 8/24
1) Read Chapter 1
2) pg. 8 #1-5
3) Turn in any paperwork that is not signed (syllabus, questionnaire, and safety contract)
4) Make sure to have composition book for Monday
2) pg. 8 #1-5
3) Turn in any paperwork that is not signed (syllabus, questionnaire, and safety contract)
4) Make sure to have composition book for Monday
Tuesday, August 18, 2015
Reminders
1) Bring all three sheets (questionnaire, syllabus and safety contract) filled out to class by Friday
2) Get together your supplies for class: composition book, folder, pens/pencils and paper ASAP!
If you have any questions ask me immediately.
Syllabus 2015-2016
Welcome to Ms. Cotta’s Chemistry Class!
Room: S 303 Periods: 1, 2, 3, 5 & 6 E-mail: julianne.cotta@lausd.net
Website: www.mscotta.blogspot.com
Chemistry is a laboratory course that will consist of classwork, laboratories, take home labs, reading assignments, and homework. This school year we will study many aspects of chemistry including properties of matter, periodic table, atomic structure, atomic bonding, radioactivity, and energy. It is essential in order to be successful at chemistry to have a strong algebra foundation. This class will also require strong reading and thinking skills. It is essential that the student keeps up with the work assigned and studies regularly. There will be a midterm and a final that will require students to review and prepare in order to receive a passing grade in the class. All work and upcoming due dates are posted on Ms. Cotta’s website on a regular basis. Also feel free to contact with questions via e-mail or calling the main office to schedule a parent conference.
Textbook: Zumdahl, S.S.; Zumdahl, S.L.; DeCoste, D. World of Chemistry, 2nd ed.; Houghton Mifflin Company: Evanston, Il, 2007.
Required Materials (brought to class EVERY DAY!): 1) Folder 2) Composition Book 3) Loose lined paper (not in a spiral notebook) 4) Pencils and pens (blue or black ink)
Grading Policy: A = 100-90% B = 89=80% C = 79-65% D = 64-55% F=less than 55%
Assignments are given the following percentages in your final grade: Tests (including midterm & final): 50% Labs: 20% Homework: 10% Class Assignments: 10% Projects (including take home labs): 10%
Class Rules:
1) Respect others & yourself
2) Be on time, prepared & ready to learn
3) No electronic devices used in the classroom, make sure cell phone are off Students that have cell phones or other electronic devices out during classtime will be confiscated and returned after the class period. If the student continues to have electronic materials during classtime; the device will be collected and sent to the SOTA office for the parent to pick up.
4) Take care of the classroom and all supplies and materials; no gum, food or drink Students will not write on or destroy any materials in the classroom. If any material is found tagged or defaced, the student will be expected to help clean and beautify the defaced area. Groups will be held responsible for their table and area around it, all members will be held accountable for cleanup. Students who are chewing gum in the classroom will be responsible for scraping gum off furniture during classtime.
5) Have a positive attitude & do your best
6) Always reuse, reduce & recycle, recycling bins are next to trash can
Absences: If a student is absent, it is their responsibility to make up the work missed. Student can see the teacher before school, after school or lunch to pick up missing work. If class notes are missed, the student is responsible for asking another member of their class for missing notes. Any missed test will be made up the following class. Homework and assignments can be found on Ms. Cotta’s website, so check it often to make sure you are up to date or have any questions.
Topics to be covered this school year: --Periodic Table --Chemical Reactions --Bonds/forces --Reaction Rates --Equilibrium --Conservation of mass --Nuclear Energy --Energy Flow --Molecular movement
Homework: Homework will be assigned every Monday, Wednesday and Friday. Late homework may be turned in but will receive a deduction of 20% (two grades will be deducted). NO late homework will not be accepted after the date announced by Ms. Cotta.
Tests: Students will be given a test at the conclusion of each chapter or unit and will be notified with at least two days notice of upcoming test dates. Study guides will be posted on Ms. Cotta’s website to help review topics that will be found on the test. It is also essential that the students’ review all work assigned including homework, labs and classwork/class notes.
Laboratories: Laboratory activities are an essential part of the chemistry classroom. In order to create a safe working environment, all students must follow directions, keep work area clean and be efficient and safe when working. All students will need to sign a safety contract before participating in laboratory activities. Any student that is creating an unsafe environment by not following directions or “goofing off” will not be allowed to participate in that laboratory and will receive a zero on that assignment. The student will also receive an alternate assignment that will need to be completed.
Composition book and classwork: All warm up assignments, notes, class assignments and laboratories will be written in the students’ composition books. Composition books will be kept neat and orderly with legible handwriting. Every Friday after a test has been given, composition books will be collected and graded. For example, if a test is on Tuesday, students can expect to turn in their composition book three days later on Friday.
Tutoring/extra help: Students can visit Ms. Cotta for questions or help before or after school or lunch. Ms. Cotta will also hold after school tutoring if students need additional assistance to keep on track. Tutoring sessions will be on Monday, Wednesday and Friday, the same days homework has been assigned. Students can receive a note at the end of tutoring to bring home to their parents. All students are welcome to attend tutoring sessions, but some students will be required based on their class performance. Parents will always receive notices home if the student is required to attend tutoring after school with dates and times noted on the paper.
Communication with parents: I will call on a regular basis if your student is missing work or has behavior issues in class. Feel free to contact me or e-mail me at the address on the other side of this paper. If you have concerns, please schedule a parent conference. Please make sure that there are correct phone numbers on file, so we may contact you. I look forward to working with the students and the parents this year to make it a highly successful year.
Please do not hesitate to contact me with any concerns or questions.
Thank you for your help and support.
Ms. Cotta
Room: S 303 Periods: 1, 2, 3, 5 & 6 E-mail: julianne.cotta@lausd.net
Website: www.mscotta.blogspot.com
Chemistry is a laboratory course that will consist of classwork, laboratories, take home labs, reading assignments, and homework. This school year we will study many aspects of chemistry including properties of matter, periodic table, atomic structure, atomic bonding, radioactivity, and energy. It is essential in order to be successful at chemistry to have a strong algebra foundation. This class will also require strong reading and thinking skills. It is essential that the student keeps up with the work assigned and studies regularly. There will be a midterm and a final that will require students to review and prepare in order to receive a passing grade in the class. All work and upcoming due dates are posted on Ms. Cotta’s website on a regular basis. Also feel free to contact with questions via e-mail or calling the main office to schedule a parent conference.
Textbook: Zumdahl, S.S.; Zumdahl, S.L.; DeCoste, D. World of Chemistry, 2nd ed.; Houghton Mifflin Company: Evanston, Il, 2007.
Required Materials (brought to class EVERY DAY!): 1) Folder 2) Composition Book 3) Loose lined paper (not in a spiral notebook) 4) Pencils and pens (blue or black ink)
Grading Policy: A = 100-90% B = 89=80% C = 79-65% D = 64-55% F=less than 55%
Assignments are given the following percentages in your final grade: Tests (including midterm & final): 50% Labs: 20% Homework: 10% Class Assignments: 10% Projects (including take home labs): 10%
Class Rules:
1) Respect others & yourself
2) Be on time, prepared & ready to learn
3) No electronic devices used in the classroom, make sure cell phone are off Students that have cell phones or other electronic devices out during classtime will be confiscated and returned after the class period. If the student continues to have electronic materials during classtime; the device will be collected and sent to the SOTA office for the parent to pick up.
4) Take care of the classroom and all supplies and materials; no gum, food or drink Students will not write on or destroy any materials in the classroom. If any material is found tagged or defaced, the student will be expected to help clean and beautify the defaced area. Groups will be held responsible for their table and area around it, all members will be held accountable for cleanup. Students who are chewing gum in the classroom will be responsible for scraping gum off furniture during classtime.
5) Have a positive attitude & do your best
6) Always reuse, reduce & recycle, recycling bins are next to trash can
Absences: If a student is absent, it is their responsibility to make up the work missed. Student can see the teacher before school, after school or lunch to pick up missing work. If class notes are missed, the student is responsible for asking another member of their class for missing notes. Any missed test will be made up the following class. Homework and assignments can be found on Ms. Cotta’s website, so check it often to make sure you are up to date or have any questions.
Topics to be covered this school year: --Periodic Table --Chemical Reactions --Bonds/forces --Reaction Rates --Equilibrium --Conservation of mass --Nuclear Energy --Energy Flow --Molecular movement
Homework: Homework will be assigned every Monday, Wednesday and Friday. Late homework may be turned in but will receive a deduction of 20% (two grades will be deducted). NO late homework will not be accepted after the date announced by Ms. Cotta.
Tests: Students will be given a test at the conclusion of each chapter or unit and will be notified with at least two days notice of upcoming test dates. Study guides will be posted on Ms. Cotta’s website to help review topics that will be found on the test. It is also essential that the students’ review all work assigned including homework, labs and classwork/class notes.
Laboratories: Laboratory activities are an essential part of the chemistry classroom. In order to create a safe working environment, all students must follow directions, keep work area clean and be efficient and safe when working. All students will need to sign a safety contract before participating in laboratory activities. Any student that is creating an unsafe environment by not following directions or “goofing off” will not be allowed to participate in that laboratory and will receive a zero on that assignment. The student will also receive an alternate assignment that will need to be completed.
Composition book and classwork: All warm up assignments, notes, class assignments and laboratories will be written in the students’ composition books. Composition books will be kept neat and orderly with legible handwriting. Every Friday after a test has been given, composition books will be collected and graded. For example, if a test is on Tuesday, students can expect to turn in their composition book three days later on Friday.
Tutoring/extra help: Students can visit Ms. Cotta for questions or help before or after school or lunch. Ms. Cotta will also hold after school tutoring if students need additional assistance to keep on track. Tutoring sessions will be on Monday, Wednesday and Friday, the same days homework has been assigned. Students can receive a note at the end of tutoring to bring home to their parents. All students are welcome to attend tutoring sessions, but some students will be required based on their class performance. Parents will always receive notices home if the student is required to attend tutoring after school with dates and times noted on the paper.
Communication with parents: I will call on a regular basis if your student is missing work or has behavior issues in class. Feel free to contact me or e-mail me at the address on the other side of this paper. If you have concerns, please schedule a parent conference. Please make sure that there are correct phone numbers on file, so we may contact you. I look forward to working with the students and the parents this year to make it a highly successful year.
Please do not hesitate to contact me with any concerns or questions.
Thank you for your help and support.
Ms. Cotta
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