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Journal – Thursday, October 3, 2013

Journal – Thursday, October 3, 2013. Standards: 2a. Students know about ionic and covalent bonding. Independent Practice: Lewis Dot Diagrams Worksheet Bonding Basics Worksheet. Ionic bonding is the _________ of electrons between _____________ and ____________.

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Journal – Thursday, October 3, 2013

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  1. Journal – Thursday, October 3, 2013 Standards: 2a. Students know about ionic and covalent bonding. Independent Practice: • Lewis Dot Diagrams Worksheet • Bonding Basics Worksheet • Ionic bonding is the _________ of electrons between _____________ and ____________. • Covalent bonding is the ____________ of electrons between two or more _____________.

  2. Housekeeping – Upcoming Due Dates • Unit 2 Chemical Bonding Examination • Blocks 1 and 3: Tuesday, October 15, 2013 • Blocks 2 and 4: Wednesday, October 16, 2013 • Journal Check #2 • Blocks 1 and 3: Tuesday, October 15, 2013 • Blocks 2 and 4: Wednesday, October 16, 2013 • Chemical Bonding Love Poem *Summative • Hard Deadline: Wednesday, October 16, 2013 at 1pm. • ALL JUNIORS – Element Research Paper • Hard Deadline: Friday, October 11, 2013 at 11:59pm. Must be shared!

  3. Element Research Paper • The Component 3: Chemistry Superpower completed research paper on your assigned element is due on Friday, October 11, 2013 by 11:59pm. The paper needs to be shared on Google Drive. My e-mail address is bbeu@thesae.k12.ca.us.

  4. In-Text Citations • It is plagiarism to use information from a text without giving the text proper credit. Make sure you use IN-TEXT citations and have a WORKS CITED with your paper. Failure to do so, will result in a ZERO (“0”). In text citations look like this: (author’s name page number) ie: (Zumdahl 256) or (name of website page number) ie: (Chemicool.com 2). • I created a sample paper for platinum that includes in-text citations that is on the school’s website: thesae.org on both the Chemistry and Junior House pages.

  5. Component 3 Paper Continued • See the PomComCon Project Packet for paper requirements. • Please see me is you still need the assigned element information. • All students are required to complete this paper. It is both a Chemistry and a House grade. • The Research Worksheet is a separate grade, so please make sure that has been turned in as well. • If you need to schedule time with a computer, we can make arrangements to do so before or after school.

  6. Polyatomic Ions – First Test Selection

  7. Metals • Metals usually have the following characteristics: • Shiny • Good conductors of heat and electricity • Solid at room temperature

  8. Metals Metals make up the majority of elements. They are located to the left and center on the periodic table.

  9. Metallic Bonds • A metallic bond is a bond formed when many metal atoms share their pooled electrons. • Metal atoms can bond to the same metal or a different type of metal.

  10. Metallic Bonds Valence electrons are not transferred in metallic bonds. Instead, they move freely through a piece of metal. The valence electrons are not attached to any atom, instead they are a “sea of electrons.”

  11. Metallic Bonds Metallic bonding explains many properties of metals – including that metals are good conductors of heat and electricity. Metal atoms pack as closely together as possible to allow the electrons to move freely.

  12. Physical Properties of Metals Malleability: property of a material to be hammered or rolled into sheets Ductility: the ability of a substance to be pulled into wires.

  13. Alloys • Alloys are mixtures composed of two or more elements, at least one of which is a metal. • Example: Brass is an alloy of copper and zinc. • Alloys are important because their properties are often superior to those of their component elements.

  14. Metal atoms are arranged very compact and orderly patterns. There are several different arrangements that are possible for spheres to arrange next to each other. Crystalline Structure of Metals

  15. Crystals • One type of crystal is held together by ionic bonds (repeating patterns of positive ions and negative ions held together by electrostatic attraction). • Sodium Chloride (table salt) is an example of this type of crystal.

  16. Crystal Patterns • Crystals are formed by repeating patterns of smaller units. • The unit cell is the smallest repeating pattern that shows how the atoms, ions, or molecules are arranged in the atom.

  17. Polymers • A covalent compound made up of many small, repeating units linked together in a chain. • The word polymer means “many parts.” • Examples include: • DNA • Plastics • Many paints

  18. Monomer Small molecule that forms a link in a polymer chain Many MANY of these monomers link by covalent bond to form a polymer.

  19. Synthetic versus Natural Polymers • Synthetic polymers are manufactured. • For example, plastic grocery bags are made from a synthetic polymer. • Natural polymers are typically organic (made of carbon). • Proteins • Carbohydrates • Nucleic Acids (DNA)

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