Journal – Thursday, October 3, 2013

Standards:Standards:

2a. Students know about 2a. Students know about ionic and covalent ionic and covalent bonding. bonding.

Independent Practice:Independent Practice:-Lewis Dot Diagrams Lewis Dot Diagrams WorksheetWorksheet-Bonding Basics Bonding Basics WorksheetWorksheet

Ionic bonding is the _________ of electrons between _____________ and ____________.

Covalent bonding is the ____________ of electrons between two or more _____________.

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!

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.

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.

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.

Polyatomic Ions – First Test Selection

Name: Formula: Charge:

Sulfate SO4 2-

Permanganate MnO4 1-

Hydroxide OH 1-

Carbonate CO3 2-

Ammonium NH4 1+

MetalsMetals

Metals usually have Metals usually have the following the following characteristics:characteristics:

– ShinyShiny– Good conductors of heat Good conductors of heat

and electricityand electricity– Solid at room temperatureSolid at room temperature

MetalsMetals

Metals make up the Metals make up the majority of elements.majority of elements.

They are located to the They are located to the left and center on the left and center on the periodic table.periodic table.

Metallic BondsMetallic Bonds

A metallic bond is a A metallic bond is a bond formed when bond formed when many metal atoms many metal atoms share their pooled share their pooled electrons.electrons.

Metal atoms can bond Metal atoms can bond to the same metal or a to the same metal or a different type of metal.different type of metal.

Metallic BondsMetallic Bonds

Valence electrons are Valence electrons are not transferred in not transferred in metallic bonds. metallic bonds.

Instead, they move Instead, they move freely through a piece freely through a piece of metal.of metal.

The valence electrons The valence electrons are not attached to any are not attached to any atom, instead they are atom, instead they are a a ““sea of electrons.sea of electrons.””

Metallic BondsMetallic Bonds

Metallic bonding explains Metallic bonding explains many properties of many properties of metals – including that metals – including that metals are good metals are good conductors of heat and conductors of heat and electricity.electricity.

Metal atoms pack as Metal atoms pack as closely together as closely together as possible to allow the possible to allow the electrons to move freely.electrons to move freely.

Physical Properties of MetalsPhysical Properties of Metals

Malleability: property of Malleability: property of a material to be a material to be hammered or rolled hammered or rolled into sheetsinto sheets

Ductility: the ability of a Ductility: the ability of a substance to be pulled substance to be pulled into wires.into wires.

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.

Crystalline Structure of Metals

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.

CrystalsCrystals

One type of crystal is One type of crystal is held together by ionic held together by ionic bonds (repeating bonds (repeating patterns of positive patterns of positive ions and negative ions ions and negative ions held together by held together by electrostatic attraction).electrostatic attraction).

– Sodium Chloride (table Sodium Chloride (table salt) is an example of this salt) is an example of this type of crystal. type of crystal.

Crystal PatternsCrystal Patterns

Crystals are formed by repeating patterns of Crystals are formed by repeating patterns of smaller units.smaller units.– The unit cell is the smallest repeating pattern that shows The unit cell is the smallest repeating pattern that shows

how the atoms, ions, or molecules are arranged in the how the atoms, ions, or molecules are arranged in the atom.atom.

PolymersPolymers

A covalent compound A covalent compound made up of many small, made up of many small, repeating units linked repeating units linked together in a chain.together in a chain.

The word polymer means The word polymer means ““many parts.many parts.””

Examples include:Examples include:– DNADNA– PlasticsPlastics– Many paintsMany paints

MonomerMonomer

Small molecule that Small molecule that forms a link in a forms a link in a polymer chainpolymer chain

Many MANY of these Many MANY of these monomers link by monomers link by covalent bond to form covalent bond to form a polymer. a polymer.

Synthetic versus Natural PolymersSynthetic versus Natural Polymers

Synthetic polymers are Synthetic polymers are manufactured.manufactured.

– For example, plastic For example, plastic grocery bags are made grocery bags are made from a synthetic polymer. from a synthetic polymer.

Natural polymers are Natural polymers are typically organic (made typically organic (made of carbon). of carbon).

– ProteinsProteins– CarbohydratesCarbohydrates– Nucleic Acids (DNA)Nucleic Acids (DNA)