Starter

Directions: Write the following information. Answer the information correctly using your notes.What is the formula for the following topics?a.) Velocity=b.) Acceleration=c.) Force=d.) Ohm’s Law=e.) Speed of a Wave=

Ions and Compounds

Day 59

Essential Question

• What is the relationship between valence electrons, oxidation numbers, and ions?

Learning Target

• I can identify the oxidation number and ion from the group number of an element.

Review: Electricity

• Directions: On the left-side of your notebook, write and answer the following information.

A.Christmas lights work on a parallel circuit. What will happen when one light goes out?

B.Two rods are brought close together. Both rods are negative charge, what will happen when brought close to each other?

C.What is the resistance of a circuit with 12V and 6A?

Review: Valence Electrons

• Directions: What does the picture below represent?

Explain: Lewis StructureDirections: On the left-side of your notebook, Draw the lewis structure for the following elements and how many valence electrons they have.

1.) Al 3.) F2.) N 4.) Ne

Explain: Oxidation Numbers and Ions

• Teacher will pass out notes on Oxidation and Ions.

• Read Over the Notes.

Explore: Oxidation numbers• Directions: On the left-side of your notebook, write

the following elements down and match them with the correct oxidation number using you notes and periodic table.

For example: Mg is in group 2A has an oxidation number of 2.N is in group 5A has an oxidation number of 3. (5-8=3)Elements Oxidation numbera.) Silicon 1b.) Calcium 2c.) Iodine 3d.) Boron 4e.) Hydrogen 1

Teacher Explains: Losing Electrons and Gaining Electrons

Explain: Ions

• http://www.youtube.com/watch?feature=player_detailpage&v=k3w6oTlIWt8

Explain: Ions

• Directions: On the left-side of your notebook, write the following element and match it with the correct ion. Use your notes and periodic table to get the correct answer.

Example: Lithiuma.) Li1- b.) Li2+ c.) Li1+ d.) Li 2-

The correct answer is Li1+ Why, because Li is a metal (+) and group 1A (1).

Berylliuma.) Be2- b.) Be1+ c.) Be2+ d.) Be4-

Calciuma.) Ca2+ b.) Ca20+ c.) Ca2- d.) Ca20-

Aluminuma.)Al13- b.)Al3+ c.)Al13+ d.)Al3-

Carbona.) C4- b.) C4+ c.) C6+ d.) C6-

Phosphorusa.) P15+ b.) P15- c.) P3+ d.) P3-

Sulfura.) S32+ b.) S32- c.) S2- d.) S2+

Brominea.) Br35+ b.) Br1- c.) Br 1+ d.) Br35-

Neona.) Ne10+ b.) Ne0 c.) Ne8- d.) Ne8+

Explain: Practice Problems Ions

Directions: Do not write on Worksheet. Put your answers on the back of you notes you received today.