09.10.12 Atomic Number

*Place the title and date at the top

of your paper. Place an “S” in the

margin of your paper then answer

the prompt in a complete sentence.

S: Draw and label the atom. Which particle makes one atom different from another atom?

What the Periodic Table Tells You

P:

Copy & Label:A. Atomic NumberB. Atomic MassC. Chemical SymbolD. Element Name

What the Atomic Number Tells You

•The Atomic Number:•Equals the number of protons in the nucleus•Can also help you determine the number of electrons in an atom•Is easily found on the Periodic Table

P:

Drawing Atoms

If you do not finish its for homework.

A:

What Identifies You as You?

List 5 things thatcan be used to identify you. For example: hair color and height.

C:

Johnny has a test on Atoms this week. He is still having some troubleunderstanding the parts of an atom. Explain the role, location, and chargeof each subatomic particle in an atom to Johnny so he can pass his test!

E:

09.11.12 Atomic Mass*Place the title and date at the top

of your paper. Place an “S” in the

margin of your paper then answer

the prompt in a complete sentence.

S: Copy the image and label each line. What does the Atomic Number tell you about an atom?

Chemical Symbol

Element Name

Atomic Mass? Say What?•The Atomic Mass:

•Equals the number of protons + number of neutrons in the nucleus•Unit = AMU (atomic mass unit)•The exact Atomic Mass is found on the Periodic Table

P:Atomic Mass = # of Protons + # of Neutrons

P: Proton

Neutron

electron

CH 2

Section Review:

Finish:-Read Section 2 pg 44-49. Then complete the Section Review on page 49 1-4.

A:

Identifying Elements

Choose your favoriteelement from thePeriodic Table. Writedown its element name, chemicalsymbol, atomicnumber, atomicmass, # of protons,and # of electrons.

C:

Determine which element each image is depicting.

E:

1. 2.

S: What is a valence

electron? How do

they relate to an

atom’s reactivity?

9.12.12 Valence Electrons

P: Intro To Valence Electrons /

Electron cloud. Carbon AtomThe electron cloud is the group of electrons

revolving around the nucleus of an atom; a cloudlike group of electrons

The valence electrons are found in the outermost energy level of an atom.

1st energy level 2nd energy level (outermost)

Carbon atom has 4 valence electrons.

Valence electrons of an atom are responsible for chemical reactions.

P: Compare reactive elements and stable

elements. Carbon Atom

3.The number of valence electrons determines the number of reactions an atom can make.

4. Oxygen has 6 valence electrons. Carbon has 4 valence electrons. Which atom can react or make more Bonds?

Oxygen Atom Neon Atom

1. Atoms are more likely to be reactive if they have between 1 and 7 valence electrons.

2. An atom that has 8 valence electrons is considered stable and non-reactive because the outermost energy level is completely filled and cannot bond with other atoms.

Ans. Oxygen because it can bond/react6 times compared to carbon that can onlyMake 4 bonds/react at a time.

A: Identify these atoms:

Image# of

Protons

# of Neutro

ns

# of Electro

ns

Atomic Numbe

r

Atomic

Mass

Element Name

Chemical Symbol

1

2

3

4

C: What Questions do you still have before the test on Friday?

OXYGEN ATOMNEON ATOM

E: Compare ElementsDetermine which element is more stable. Explain why?

9.13.12 Atom Jeopardy Review

S:What can the number of protons tell you about an atom?

P, A, & C: Jeopardy Review

E: Questions and Answers

What areas do we need to go over to be successful on tomorrows test?