COLLISIONS

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The meeting of particles or of bodies in which each exerts a force upon the other, causing the exchange of energy or momentum. – dictionary.com
 Follow the steps below in order and complete the activities in your notebook
  • Watch this  simulation and write a brief explanation of what you saw.
  • Click on this LINK and watch videos and answer questions ( only the question on the page not the additional link found on the page) in your notebooks.
DUE DATE: THURSDAY FEB. 23rd
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HOMEWORK: The Octet Rule and Its Exceptions

While Lewis electron dot structures help determine bonding in most compounds, there are three general exceptions:

  1.  molecules in which atoms have fewer than 8 electrons (e.g., boron chloride and lighter s- and p- block elements)
  2.  molecules in which atoms have more than 8 electrons (.e.g, sulfur hexafluoride and elements beyond period 3)
  3.  molecules with an odd number of electrons (e.g., NO).

– chemistry.about.comoctect rule.jpg

In your notebooks explain/expand each of the aforementioned exceptions to the octet rule and provide an example for each.

DUE DATE:  Friday 24th

 ( just leave your notebooks on my desk when you come in before or after flag ceremony)

 

Introduction to Ionic and Covalent Bonding

A chemical bond is a force of attraction between atoms that share or transfer electrons. When atoms of different elements bond together, they form a chemical compound, which is a new substance with a fixed ratio of elements. Types of bonds include ionic, covalent, and metallic bonds. The different types of bonds form compounds that have different properties.

– ck12.org

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We will be learning about ionic, covalent, and metallic bonding during the next few weeks.We will start with ionic bonding and then go on to covalent bonding. Watch the video in the link below and take notes if necessary, it should illustrate and help your understanding of the first two types of bonds.

http://www.schooltube.com/video/7870b1153b034ec08d7a/

QUIZ REVIEW

For quiz  review the following terms:

  • Electron dot structure
  • Alkali metals
  • Alkali earth metals
  • Transition elements
  • Atomic radius
  • Ion
  • Ionization energy
  • Electron affinity
  • Cation
  • Anion
  • Electro negativity
  • Period trends
  • Group trends

QUIZ DATE: Fri.17th

 

 

STAGE 3: ACTION!!

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So far we’ve successfully completed 2 stages of our science fair. It is now time to take action!!

Like stated previously, this is the hands on stage where you follow your timeline, investigation plan and investigate, experiment, collect data, and have the most fun!!   Many of you have already started and are on the right track  🙂

Remember that all parts of your action plan must be thoroughly investigated, documented and then added to your research paper. At the end of this stage you will submit your completed research paper which must be composed of:

  • Introduction that ends with a detailed hypothesis.
  • Global and local information regarding your chosen topic with citations.
  • Similar experiments/research regarding your chosen topic with citations.
  • Importance of researching your topic globally or locally with citations.
  • Explanation of why your group is interested in this topic.
  • Analysis of the problem or research question.
  • Details of all actions taken during research or of experiments ( include pictures of yourself in action for illustration purposes)
  • Results in graphs, charts, and/or written details.
  • Conclusion. Written coherently and based on the recollected data and results.
  • Analysis that explains the limitations that your research may have had and what the group would do differently or change during a future investigation or experiment.

DUE DATE OF COMPLETED STAGE 3:  MARCH 10th