Sustainability Fair: Model Dimensions

For this year’s fair every group needs to make a model ( maqueta ) that illustrates their project.

The model ( maqueta ) needs to have the following dimensions: 34 inches in length and 25 inches width.


Metallic Bonds: H.W.

Please follow the link below, read, watch video, and analyze before answering the questions. DUE NEXT CLASS

Metal worker shaping iron on an anvil

QUESTIONS: (Also found in the link)

  1. What are metallic bonds?
  2. How do metallic bonds relate to the properties of metals?
  3. The iron in the metal working picture above (Figure above) is red hot. Infer why the metalworker heats the iron when he shapes it.
  4. What is electricity? Why can metals conduct electricity?
  5. What can metals conduct besides electricity?
  6. How could you use an empty pop can to demonstrate that metals can bend without breaking?



LOG: Chemical Engineering

For this LOG you will need to talk to the rest of the class about the field of chemical engineering. At the end of your presentation we must all know, what chemical engineering is and what chemical engineers do. Also bring a short video of a chemical engineered being interviewed.



Chemical Bonds Project

This project will be worked individually. Every student must select one ionic bond, one polar covalent bond, and one non-polar covalent bond. For each of these, every student will make a video of themselves explaining:

  1. What elements compose the bond?
  2. Explanation of Bohr’s model for each element.
  3. How the composing elements are classified?
  4. Where on the periodic table are the elements found?
  5. How many valence electrons?
  6. Explain what type of bond is formed by the elements and why?
  7. Explain the characteristics of the bond that was formed.
  8. Explain how they bond and how their electronegativity changes and how the elements change after they bond?
  9. Mention where the molecule that is formed after the chemical bond is found.




Ionic bonding and Lewis Dot Structure continuation.

The Octet Rule and Covalent Bonds

When ions form, they conform to the octet rule by either losing or gaining electrons in order to achieve the electron configuration of the nearest noble gas.  In a similar way, nonmetal atoms share electrons in the formation of a covalent in bond such a way that each of the atoms involved in the bond can attain a noble-gas electron configuration.  The shared electrons are “counted” for each of the atoms involved in the sharing.  For hydrogen (H2), the shared pair of electrons means that each of the atoms is able to attain the electron configuration of helium, the noble gas with two electrons. For atoms other than hydrogen, the sharing of electrons will usually provide each of the atoms with eight valence electrons.




Lewis Dot Diagrams

For tomorrow ( 01/23/18 ) :

  1. Watch the first video and takes notes of the rules for writing dot structures.
  2. Watch the second video analyze it and write down any questions you may have to discuss tomorrow in class
  3. Come ready to complete an activity on Lewis dot diagrams.