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Universal laws and other relationships are used to analyze, understand, and explain chemical interactions and phenomena in everyday life.
- What chemical laws or relationships can be applied to or derived from a given system?
- In what ways is an understanding of chemistry useful in everyday life?
A system is a collection of interactive, interrelated, or interdependent cycles, structures, and / or processes.
- How are the components and parameters of a system defined?
- How are the functions of the components in a system related to the structures of the system?
- How can one system be considered a component of another system?
Physical, mathematical, or conceptual models can be used to describe, investigate, and make predictions about a system in terms of its components and how they relate to each other, to the whole, and to the external environment.
- In what ways are models used to help us interpret systems?
- To what extent do limitations of models affect their reliability, validity, and usefulness?
Patterns of constancy and change in systems can be observed, measured, and / or modeled.
- What information do patterns provide about a system(s)?
A system can be described by its basic properties and analyzed in terms of interactions.
- In what ways do interactions affect the basic properties of a system?
ASSIGNMENT: Choose one of the videos above on types of chemical bonds (or both if you have time and feel it would be helpful). Then, watch the ChemThink animation.
1. Create a double bubble map comparing ionic bonds and covalent bonds.
2. See me with your maps and prepare to be quizzed on identifying whether a bond is ionic or covalent.
ASSIGNMENT: Watch the video on polar and nonpolar covalent bonds.
1. Create a double bubble map comparing polar and nonpolar covalent bonds.
ASSIGNMENT: Watch the video on metallic bonds.
1. Create a bubble map for Metallic Bonds.
2. Then, write a summary about the similarities and differences between the three types of bonds- ionic, covalent and metallic. You may use a graphic organizer, such as a triple-bubble map (Venn diagram) to show similarities and differences between the three bond types.
ASSIGNMENT:
1. Start with a self- check about valence electrons in atoms. This should be a review.
2. If you aren't getting them correct, see me for a refresher!
ASSIGNMENT: Watch both of the videos above on how to draw Lewis Dot Structures for an atom.
1. As you watch, create a bubble map about Drawing Lewis Dot Structures. Be sure to focus on the rules for writing dot structures!
2. Pick 5 elements (from at least 3 different families) and draw the Lewis Dot Structure for the atoms. Show me!
3. Once you've mastered a Lewis Dot structure for a see me for a copy of the Lewis dot structure lab
ASSIGNMENT: Select one of the videos on VSEPR theory and watch it (or if you have time, you may watch both).
1. Create a bubble map on the different molecular geometries. Pay attention to how many bonding sites and lone pair of electrons each one has. Focus on:
- Trigonal planar
- Tetrahedral
- Trigonal Pyramidal
- Linear
- Bent
2. Write a 3-5 sentence summary on VSEPR theory. What is it used to to? How is this helpful?
1) . Get a copy of the VSEPR virtual lab assignment from me. You will be predicting shapes of molecules using a virtual lab and then producing the molecule using hands-on model pieces with chemistry sets. The link for the virtual lab portion is available above.
PROJECT:
Given several compounds (see me to get your compounds):
- Determine if the compound is ionic or covalent
- Describe physical and chemical properties of the compounds.
- Represent each compound on a visual display, such as a poster. Include:
- the electron configuration for each element in the compound (you may use Noble gas configurations if you'd like)
- Lewis valence electron dot structure of the whole molecule and
- shape of each molecule using VSEPR theory
You are done with the unit!
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