atoms

Earth Science September 28 th 2010 Mrs. Harris

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Earth Science

September 28th 2010Mrs. Harris

Today’s Objectives...

• Atoms and sub-atomic particles

Atoms

• Smallest unit of matter• Composed of (sub-atomic particles)• Similar atoms make elements

Introducing the Elements

• « The Element Song » by Tom Leher

Nucleus~Protons (positive)

~Neutrons (neutral)

Orbit~Electrons (negative)

Periodic Table

www.ptable.com

Atomic number and mass• Atomic number is the number of protons

• The atomic mass is the approximate mass of the sub-atomic particles

Investigating Elements

• You’ll be put into a break out room with a group and be assigned an element.

• Use the dynamic periodic table to find out some cool info on your element. (3-4 things, nothing too technical)

• Draw a basic atom on the board with 4 protons, 4 neutrons, and 4 electrons.

Assignments this week:

• Unit 3 Discussion• Unit 3 Assignment (multiple choice)• 4-1 Quiz

• Next class: Bonds… James Bonds

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atoms

Education

atomic mass

mass atomic number

number of protons

discussion unit

approximate mass

atoms smallest unit

elements youll

element song