Biology I

Hello 2019-2020 Biology Families, 

During the school closure I ask that you please access the Biology Class tab on my page to access all class information and assignments. Students are strongly encouraged to review all Standards of Learning we have covered for the year using the links and practice that will be available on the tab. Review type assignments will be uploaded on a weekly basis. Each new file will have the assigned week in its title, starting with the assignment for Week 3_30 to 4_3.
I will keep you updated with email communications through the Hub.

Should you have any questions, please email me at riveranm@pwcs.edu
      I wish you all the very best and hope that this message finds you healthy and well!!



Chemistry I 

Mole Clipart Chemistry | Free Images at Clker.com - vector clip ...

Hello 2019-2020 Chemistry Families, 

Below you will find a comprehensive listing of the objectives for Chemistry classes in the Commonwealth of Virginia.  Objectives which were covered prior to the close of school on March 13, 2020 have been high-lighted.  Dates of coverage are noted along with online reviews which may be watched for a quick refresher.  
Students are strongly encouraged to practice and self-test using the links which will be available on the HOMEWORK tab (to the left on this page).  Here you will find many practice games and quizzes, notes, simulations, and more.  A particularly great tool for practice questions is the link entitled "J Labs Practice Test Questions".  Once on this site, students can select topics to test from which correspond to the 5 main objectives for chemistry (listed below).
Should you have any questions, please email me at riveranm@pwcs.edu
      I wish you all the very best and hope that this message finds you healthy and well!!

Chemistry

The Chemistry standards are designed to provide students with a detailed understanding of the interaction of matter and energy. This interaction is investigated through the use of laboratory techniques, manipulation of chemical quantities, and problem-solving applications. Scientific methodology is employed in experimental and analytical investigations, and concepts are illustrated with practical applications that should include examples from environmental, nuclear, organic, and biochemistry content areas.

 

Technology, including graphing calculators, computers, and probeware, are employed where feasible. Students will understand and use safety precautions with chemicals and equipment. The standards emphasize qualitative and quantitative study of substances and the changes that occur in them. In meeting the chemistry standards, students will be encouraged to share their ideas, use the language of chemistry, discuss problem-solving techniques, and communicate effectively.

 

The Chemistry standards continue to focus on student growth in understanding the nature of science. This scientific view defines the idea that explanations of nature are developed and tested using observation, experimentation, models, evidence, and systematic processes. The nature of science includes the concepts that scientific explanations are based on logical thinking; are subject to rules of evidence; are consistent with observational, inferential, and experimental evidence; are open to rational critique; and are subject to refinement and change with the addition of new scientific evidence. The nature of science includes the concept that science can provide explanations about nature, can predict potential consequences of actions, but cannot be used to answer all questions.

 

CH.1    The student will investigate and understand that experiments in which variables are measured, analyzed, and evaluated produce observations and verifiable data. Key concepts include

  1. designated laboratory techniques;
  2. safe use of chemicals and equipment; Covered September 2019:Review https://www.youtube.com/watch?v=VRWRmIEHr3A
  3. proper response to emergency situations; Covered September 2019; Review https://www.youtube.com/watch?v=9o77QEeM-68
  4. manipulation of multiple variables, using repeated trials;
  5. accurate recording, organization, and analysis of data through repeated trials;
  6. mathematical and procedural error analysis; Covered September 2019; Review https://www.youtube.com/watch?v=h--PfS3E9Ao
  7. mathematical manipulations (SI units, scientific notation, linear equations, graphing, ratio and proportion, significant digits, dimensional analysis); Covered September 2019; Reviewhttps://www.youtube.com/watch?v=8XoDCewJ-z0

                       https://www.youtube.com/watch?v=ZtB0vJMGve4

                      https://www.youtube.com/watch?v=nojSLJ9KYvQ

                      https://www.youtube.com/watch?v=C17o68cR6NA

                      https://www.youtube.com/watch?v=l2yuDvwYq5g

                      https://www.youtube.com/watch?v=7N0lRJLwpPI

  8. use of appropriate technology including computers, graphing calculators, and probeware, for gathering data and communicating results; and
  9. construction and defense of a scientific viewpoint (the nature of science).

 

CH.2    The student will investigate and understand that the placement of elements on the periodic table is a function of their atomic structure. The periodic table is a tool used for the investigations of

  1. average atomic mass, mass number, and atomic number; Covered December 2019; Review https://www.youtube.com/watch?v=MeC-Zo6gfGo
  2. isotopes, half lives, and radioactive decay;
  3. mass and charge characteristics of subatomic particles; Covered December 2016:Review https://www.youtube.com/watch?v=C_UI2hQW5KY
  4. families or groups;
  5. series and periods; Covered September 2019- February 2020:Review https://www.youtube.com/watch?v=LFr8Wp2BL-Y
  6. trends including atomic radii, electronegativity, shielding effect, and ionization energy; Covered Feb/March 2020; Reviewhttps://www.youtube.com/watch?v=0h8q1GIQ-H4
  7. electron configurations, valence electrons, and oxidation numbers; Covered Feb/March 2020; Review https://www.youtube.com/watch?v=NIwcDnFjj98
  8. chemical and physical properties; and Covered October 2019 : Review https://www.youtube.com/watch?v=Z5L2NOMEWT0
  9. historical and quantum models. Covered December 2019-February 2020;https://www.youtube.com/watch?v=-4Us5PTb4J8

 

CH.3    The student will investigate and understand how conservation of energy and matter is expressed in chemical formulas and balanced equations. Key concepts include

  1. nomenclature; Covered November 2019-February 2020:Reviewhttps://www.youtube.com/watch?v=Rq0A-AHdB74

                      https://www.youtube.com/watch?v=URc75hoKGLY

                      https://www.youtube.com/watch?v=5Jb2u9ihfm4

                      https://www.youtube.com/watch?v=DejkvR4pvRw

  2. balancing chemical equations; Review https://www.youtube.com/watch?v=e_C-V5vJv80
  3. writing chemical formulas (molecular, structural, and empirical; and Lewis diagrams); General Chemistry Partially covered (molecular and empirical) December 2019-January 2020;Reviewhttps://www.youtube.com/watch?v=JeSSucG-CVw

    Pre-AP Classes covered structural and Lewis in February-March 2020:  Review  https://www.youtube.com/watch?v=NFZtjSeT3XE

  4. bonding types (ionic and covalent); February 2020:Review https://www.youtube.com/watch?v=S_k0kr2eZSQ
  5. reaction types (synthesis, decomposition, single and double replacement, oxidation-reduction, neutralization, exothermic, and endothermic); andReaction types synthesis – single replacement - planned to be covered end of March - April 2020:Review https://www.youtube.com/watch?v=aMU1RaRulSo
  6. reaction rates and kinetics (activation energy, catalysis, and degree of randomness). Review https://www.youtube.com/watch?v=YacsIU97OFc

 

CH.4    The student will investigate and understand that quantities in a chemical reaction are based on molar relationships. Key concepts include

  1. Avogadro’s principle and molar volume; Covered October-November 2019; Review https://www.youtube.com/watch?v=74-X94OP2XI

                      https://www.youtube.com/watch?v=Y8e7T09SKZ0

  2. stoichiometric relationships;
  3. partial pressure;
  4. gas laws;
  5. solution concentrations; Covered January-February 2020:Review https://www.youtube.com/watch?v=QRnHFQLYS8w

                     https://www.youtube.com/watch?v=v6dnEp58mVk

  6. chemical equilibrium; and
  7. acid/base theory: strong electrolytes, weak electrolytes, and nonelectrolytes; dissociation and ionization; pH and pOH; and the titration process.

 

CH.5    The student will investigate and understand that the phases of matter are explained by kinetic theory and forces of attraction between particles. Key concepts include

  1. pressure, temperature, and volume;
  2. vapor pressure;
  3. phase changes;
  4. molar heats of fusion and vaporization;
  5. specific heat capacity; and
  6. colligative properties.