1. Ionic Bonds are formed between? a.Metal and metal b.Metal and nonmetal c.Metalloid and Nonmetal 2.Which of the following is an ionic bond? a.H 2 O b.HCl c.CaCl 2

1.What is another name for the groups on the periodic table? 2.What do all the elements of the same group have in common? 3.Why do you suppose group 1 reacts easily with group 7?

Tuesday, December 2, Why will neon not usually become an ion? 2.How many valence electrons will sodium have after it becomes an ion? 3.How many valence electrons will fluorine have after it becomes an ion? 4.What is the connection between questions 1-3?

Monday, December 1, 2014 Identify the following as either physical or chemical change: a.Mixing Koolaid with water. b.The Statue of Liberty changing from copper to green color. c.Ice melting d.Iron nails attracting to a magnet.

Friday, November 21, 2014 How many valence electrons do each of the following elements have? a.Chlorine b.Oxygen c.Boron d.Xenon e.Helium f.Magnesium g.Bromine h.Lithium

Lewis Dot Structures are used to show the number of valence electrons on the outer shell Represented by the group number Valence electrons represent the oxidation number

Get out your periodic table. Draw the chart below in your notebook. ElementSymbolPeriod #shells Group # # of Valence Electrons Lewis Dot Structure Carbon Sodium Neon Hydrogen

Determine the number of shells and the number of valence electrons for:

Get out your periodic table. Draw the chart below in your notebook. ElementSymbolPeriod #shells Group # # of Valence Electrons Lewis Dot Structure Carbon Sodium Neon Hydrogen C

Determine the number of shells and the number of valence electrons for:

Get out your periodic table. Draw the chart below in your notebook. ElementSymbolPeriod #shells Group # (Oxidation) number # of Valence Electrons Lewis Dot Structure Carbon Sodium Neon Hydrogen C2 214 Na

ElementSymbolPeriod #shells Group # (Oxidation) number # of Valence Electrons Lewis Dot Structure Carbon Sodium Neon Hydrogen C Na Ne H

Electrons- negative charge (-) Protons- positive charge Neutron- neutral charge.

Intro to Bonding Ions- Positively or Negatively charged atoms.

Write down each element and identify if it is a Lender (L) or Borrower (B): Calcium Phosphorus Nitrogen Oxygen Potassium Argon

Monday, November 24, 2014 Draw Lewis Dot structures for: Si, N, B, Li, Be, K EXAMPLE: Remember: Lewis dot structures represent electrons on outer shell.

Elements − An element is made of one kind of atom. − Found on the periodic table.

Compounds 2 or more elements combined. Sodium Chloride NaCl Aluminum Oxide Al 2 O 3

Compound or Element? He Peroxide H 2 O Potassium KCl

LET’S REVIEW Ions- _______________ or ______________ charged atoms.POSITIVELYNEGATIVELY

Metals ______ electrons, creating a __________ charge. lose positive Nonmetals _________ electrons, creating a ________________________ charge. gain negative

(Review) Intro to Bonding Ions- Positively or Negatively charged atoms. Sometimes, the atoms must become ions first, before becoming a compound.

Ionic Bonding- Forms when electrons are transferred from one atom to another. (One atom loses electrons while the other gains.) IBs- form salts (Combo of metal and nonmetal).

Characteristics of Ionic Bonds 1.Form Crystal Lattices 2.Brittle 3.High Melting and Boiling Points (think about the salt demo) 1.

Let’s see a few salt combinations.. KBr

November 24, ___________ and ____________ of an atom are inside the nucleus. 2.____________ move around the outer shells. 3. Which subatomic particle would determine the reactivity of an element? PROTONS NEUTRONSELECTRONS

In your notebooks, use nitrogen as your example to write a 4 step flow chart for how an element becomes an ion.

Draw the Bohr Model for the element. Identify the number of valence electrons. Identify whether the element is a metal or nonmetal. (If it is a metal it will lose electrons, if it is a nonmetal- it will gain electrons.) Add or remove electrons based on the valence electron ratio and determine the charge.

Ionic Bonding Worksheet

Covalent Bonding Form when atoms share electrons. Form between 2 or more nonmetals.

Group Work Guidelines Everyone is accountable! Group Work Assignments means that you get a class grade for how you as a group performs. Everytime you get into your groups, you are expected to turn in a Work Summary Sheet.

After you finish the today’ s worksheet…. You will make sure you and your group members have completed All Showbie Assignments. If a group member is not done, but you are, your job is to help them finish. Please be sure to label all assignments when you post them.

Group 1 elements easily react with Group 17 elements because together they equal the “special number” 8 Which group do you suppose group 2 likes to react with?

Go over quiz: You will investigate the answers for at least 5 answers you got wrong. If you have less than 5 answers wrong, your job is to help your group members who have more investigating to do. You will write a summary report of the 5 answers you investigated. If you had less than 5 answers to investigate, you will include a detailed list of the questions you helped your group members to find the answers for.

Monday, December 8, The formula H 2 O means: a. There are 2 hydrogens and 1 oxygen b.There is 1 hydrogen and 2 oxygens c.There are 2 hydrogens and 2 oxygens d.There is 1 hydrogen and 1 oxygen 2. The formula H 2 O 2 means: a. There are 2 hydrogens and 1 oxygen b.There is 1 hydrogen and 2 oxygens c.There are 2 hydrogens and 2 oxygens d.There is 1 hydrogen and 1 oxygen

Atom vs Element A substance composed of only one kind of atom – it cannot be broken down into simpler substances by ordinary means. Examples: Hydrogen H, Oxygen O, Aluminum Al The smallest particle of matter that displays the properties of an element. LET’S Review! Tuesday, November 18

The ________________ which are represented by a single uppercase letter, or represented by an uppercase letter followed by a lowercase letter. This tells you the types of elements in the compound. H2OH2O Chemical Formula Have Several Parts Element Symbol

OHH2OH2O LET’S Count ELEMENTS! What Elements do you see? How many elements do we have total? 1 (Hydrogen) + 1 (Oxygen) = 2 Total Elements

The ________________ which are numbers that are found on the lower ________________- hand side of each element symbol. This tells you the number of ________________ of this element in the molecule. If an element symbol has no subscript next to it, then this indicates that there is only ________________ atom of this element in the molecule. H2OH2O Compound Formula Parts subscript atoms right one

H2H2 OH2OH2O LET’S Count Atoms! We have 2 elements. We now have to find how many of each element we have. What does the subscript (2) tell us about Hydrogen? Elements# of Atoms Hydrogen2 How many Oxygen atoms do we have? Elements# of Atoms Hydrogen2 Oxygen1 So how many total atoms do we have? 3 Total Atoms in H 2 O

COMPOUNDTOTAL NUMBER OF ELEMENTS NAMES & NUMBERS OF ATOMS OF EACH ELEMENTTOTAL ATOMS As 2 S 3 AlCl 3 FeI 2 BaCl 2 MnBr 2 CaS SrCl 2 HgBr K2SK2S Fe 2 O 3 H 2 SO 4 Arsenic Sulfur AluminumChlorine213 4 IronIodine212 3 Let’s Practice :

COMPOUNDTOTAL NUMBER OF ELEMENTS NAMES & NUMBERS OF ATOMS OF EACH ELEMENTTOTAL ATOMS As 2 S 3 AlCl 3 FeI 2 BaCl 2 MnBr 2 CaS SrCl 2 HgBr K2SK2S Fe 2 O 3 H 2 SO 4 Arsenic Sulfur AluminumChlorine213 4 IronIodine 3 221

Counting Atoms Homework

Tuesday, December 9, 2014 Get your notebook, Ipad, and have a seat. Wait for my instructions. I will be counting tardies today.