Use page 268 of your textbooks to define: 1. Chemical Bonding 2. Chemical Bonds

Chemical Bonding- the joining of atoms to form new substances. Chemical Bond- a bond formed when electrons are shared, gained, or lost.

1.___________ 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?

1.Explain what it means for an atom to become positively charged. 2.Explain what it means when a atom becomes negatively charged. 3.A. What does beryllium look like when it becomes an ion? 4.What does neon look like when becoming an ion?

Pop Quiz For Neon 1.Draw the atomic structure (with protons, neutrons, and electrons). 2.Highlight the valence electrons. 3.Write the group name and number and period number. 4. Explain why it is unreactive.

Pop Quiz For the following elements: 1.Draw the atomic structure (with protons, neutrons, and electrons). 2.Highlight the valence electrons. 3.Write the group name and number and period number. Lithium, Magnesium, Flourine, Neon

I know that NaCl (sodium chloride) is an ionic bond because?

Valence Electrons: Electrons found in the outermost shell of an atom.

Intro to Bonding Ions- Positively or Negatively charged atoms.

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

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).

Let’s Guess a few salt combinations..

Characteristics of Ionic Bonds 1.Form Crystal Lattices 2.Brittle 3.High Melting and Boiling Points 4.

Covalent Bonding Covalent bonds –form when atoms share electrons.

Polarity When a substance has both negative and positive charges.

CBs are made of 2 or more nonmetals. have weaker bonds than ionic bonds have low boiling and melting points are brittle when in solid state.

Wednesday, December 10, What does beryllium look like when it becomes an ion? 2. What does neon look like when becoming an ion?

Thursday, December 11 th, Get your notebook. 2. Get a card from Mrs. Green. 3. Have a seat.

Using a periodic table On a separate sheet of paper that you will turn in, answer the following question: 1.Write the name of your element. 2.Draw a Bohr Model for your element. 3.Draw a Lewis Dot Structure for your element. 4.Is your element a metal or nonmetal? 5.Will it lose or gain electrons?

When I say go, you will quietly find an “element” that you can form an IONIC BOND with. (Remember! Ionic Bonds form between metals and nonmetals.) Once you find a match, you will draw out how the elements form their ionic bond. Write the chemical formula for your bond, INCLUDING THE CORRECT SUBSCRIPTS WHERE NEEDED. You will do this 3 times.

In your notebooks: For the compounds below: write the element name, and the number of atoms for each element. P 4 O 10 3NaCl 16CO 2 2P 2 O 5 C 3 H 8

Chemical Formula A shorthand way to use chemical symbols and numbers to represent a substance. H 2 O H=2 O=1 There are 2 hydrogens and 1 oxygen in the formula for water.

Chemical Equations Reactants Products Yields

Coefficient Subscript

Law of Conservation of Mass

Elements of reactants are same as elements of products, just arranged differently.