Electrons and Chemical Bonding 2012 Day 1

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Transcript of Electrons and Chemical Bonding 2012 Day 1

You Will Need:1.Pencil, Text Book- Periodic

Table, Colored Pencils2. Electrons and Chemical

Bonding- 2 pages-4 sides (Pick-up from bookshelf- Please Staple)

4. Balancing Equations #1- Due Today

1. The substances on the left side of a chemical equation are called this…..

2. What is the number called in front of a chemical formula that tells you how many models to build?

3. What Law states you can neither create or destroy matter?

4. The substances on the right of the chemical equation are called this……

5. What type of substance slows down or stops a chemical reaction?

6. Numbers in a formula that represent the number needed of each atom in a compound are called this……

7. Why are elements’ atoms on the periodic table neutral?

8. The number of electrons on the outermost shell of an atom is called the atom’s ___________.

9. How many more bonds does Nitrogen need to have a full outer shell?

10.To slow down or stop a chemical reaction you would use an

____________?

Chemical Bonding is the joining of atoms to form new substances.

The properties of these new substances are different from the properties of the original elements.

Understanding the Electron Configuration for each atom will help you understand how different elements will bond.

Not all the electrons in an atom are used to make chemical bonds.

Understanding the Electron Configuration for each atom will helps you understand how different elements will bond.

It is the electrons on the OUTER-MOST Level or VALENCE electrons, that determine how an atom will react. (bond)

Atoms want to be “happy”….in other words, have a full outer shell.

Complete the chart by using your Periodic Table .

“Magic Number is “8”

Element Group Valence Bond or Not Bond

Hydrogen

Sulfur

1 1 Bond

16 6 Bond

1. Usually between Metals and Nonmetals

2. Transfer of electrons – atoms become IONS

3. Form Crystal Lattices

Bismut

h

Quarts

4. Are Brittle

5. High Melting and Boiling points

6. Dissolve Easily in water

7. Form compounds

8. Specific Shape

SAL

T

P=13N=14

Neutral Atom of Aluminum

Positively Charged Aluminum Ion (3+)

P=13N=14

P = 13+N = 14

28

3P = 13+N = 14

2 8

Neutral atom because it has equal amounts of plus (PROTONS) and minus (ELECTRONS) particles.

Positive ION because it has MORE PROTONS than ELECTRONS.

Page 231

1. Go to: Learning Point2. Select “Daily Assignments”3. Select this week: April 9th – 13th 4. Select Creating Ionic Compounds

REMEMBER: The reason these atoms are bonding is because they are oppositly charged. Positive to Negative Attraction.

Metals – Give away electronsNonMetals – Take or Gain electrons

1. Select “Test Your Skills” Tab2. As a group: Answer as many of the 39

questions as your group can3. Some Advanced questions you will not know:

2. Aufbau Principle4. Referring to Oxygen on the P.T.5. Answer is B6. Answer is C17. Answer is C32. Answer is D36. Answer is D38. Answer is A39. Answer is C

Page 233

1)Why does Sodium become an Ion? Positive or Negative? Why?

2)Why does Chlorine become an Ion? Positive or Negative? Why?

1)Why do Sodium and Chlorine bond?

2)What is the overall charge of the compound?

3)Does NaCl have the same characteristics as Na and Cl or does the compound have its own unique characteristics? Explain.

1.Complete up to Forming Sodium Chloride – Access PPT and Answer Questions

2.STAR Cards #61-101 – Due Tomorrow

3.Quiz on Cards 61-101 - Tomorrow