Week # 3 Quarter 2 (10/28) To Do Today : *Organize notebooks *Bohr Model building practice Fact of the Day The first Jack O’Lanterns were actually made from turnips. Halloween is the second highest grossing Today in I.S.… I.S. Learning Goal: •I can describe the features and components of the atom. •I can apply models to features of an atom Bohr models: http ://www.bing.com/images/search?q=periodic+table+with+bohr+model&qs=n&form=QBIR&pq=periodic+table+with+bohr +model&sc=2-28&sp=-1&sk=# Warm Up : new handout For element Al what is Lewis Dot and Bohr Model? Homework : None Quiz Wednesday
Today in I.S.…. Homework : None Quiz Wednesday. Week # 3 Quarter 2 ( 10/28) . I.S. Learning Goal: I can describe the features and components of the atom. I can apply models to features of an atom. Fact of the Day The first Jack O’Lanterns were actually made from turnips. - PowerPoint PPT Presentation
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Week # 3 Quarter 2 (10/28)
To Do Today:*Organize notebooks*Bohr Model building practice
Fact of the DayThe first Jack O’Lanterns were actually made from turnips.
Halloween is the second highest grossing commercial holiday after Christmas.
Today in I.S.…I.S. Learning Goal:•I can describe the features and components of the atom. •I can apply models to features of an atom
(notebook paper)1. Fold paper in 1/32. Glue (little bit…) onto notebook paper pg 13
1. Front Element Name and symbol2. Inside left – Atomic Mass and Atomic Number3. Right – Protons, Neutrons and Electrons4. Open right flap (center) Lewis Dot5. Right flap Bohr Model
3. On bottom of page write a paragraph describing vocab terms – highlight terms!Periodic table, charge and location of protons, electrons and neutrons, groups, periods, valence electrons
4. Turn into box
Week # 3 Quarter 2 (11/1)
To Do Today:*Periodic Table Basics *Quiz*puzzle
Fact of the Day
Today in I.S.…I.S. Learning Goal:•I can describe the features and components of the atom. •I can apply models to features of an atom
Warm Up:Find the element Carbon What is Lewis Dot structure and Bohr model
Homework: None
Just one atomic layer thick, the 'miracle material' Graphene is a better conductor of electricity and heat than any material.
Elemental Quiz
Complete the Periodic Table Basis Worksheet
Review puzzle
You should know how to draw Lewis Structures and Bohr Models for the
first 20 elements.
Week # 3 Quarter 2 (11/4)
To Do Today:
Fact of the Day
Today in I.S.…I.S. Learning Goal:
Warm Up:
Homework: None
I can describe predict properties of elements and compounds using trends of the periodic table (e.g., metals, non-metals, bonding – ionic/covalent).
Chemical BondingIS
Objectives
0Explain why atoms form bonds0Define chemical bond & name
three types of chemical bonds0Determine the chemical formulas
for covalent and ionic compounds
Bonding Atoms0Why do atoms bond?
- each atom wants a full outermost energy level - gain, lose, and share valence electrons to achieve the duet or octet rule aka: “being happy”- gives each atom an electron configuration similar to that of a noble gas
ex. GROUP VII: He, Ne, Ar
Rhyme1 Bond2 bond3 bond 43 bond 2 bond 1No more
Chemical Bonds
0Chemical Bonds- attractive force that holds atoms or ions together- 3 types
ionic, covalent, metallic- determines the structure of compound- structure affects properties
- melting/boiling pts, conductivity etc.
Types of
bonds
1. Ionic Bond0Between atoms of metals and nonmetals with
very different electronegativity0Electronegativity, symbol , is a chemical property that χ
describes the tendency of an atom or a functional group to attract electrons
0Bond formed by transfer of electrons
0Produce charged ions all states. Conductors and have high melting point.
0Examples; NaCl, CaCl2, K2O
Ionic Bonds: One Big Greedy Thief Dog!
2. Covalent Bond0Between nonmetallic elements of similar
electronegativity.0 Electronegativity, symbol , is a chemical property that describes the tendency of χ
an atom or a functional group to attract electrons
0Formed by sharing electron pairs
0Stable non-ionizing particles, they are not conductors at any state
0Examples; O2, CO2, C2H6, H2O, SiC
Bonds in all the polyatomic ions
and diatomics are all covalent bonds
when electrons are shared equally
3. NONPOLAR COVALENT BONDS
H2 or Cl2
2. Covalent bonds- Two atoms share one or more pairs of outer-shell electrons.
Naming Covalent Compounds Cont.0 Rules for the prefix system
1. less electronegative element is given first. It is given a prefix only if it contributes more than one atom to a molecule of the compound2. The second element is named by combining (a) a prefix indicating the number of atoms contributed by the atom (b) the root of the name of the second element, and (c) the ending –ide3. The o or a at the end of a prefix is usually dropped when the word following the prefix begins with another vowel