1. MacArthur MS Curriculum 2013-2014
Atoms
MacArthur MS Curriculum

2. EPISD Standards Based Curriculum 2012-2013
Warm Up
In your Interactive Student Notebook draw an atom and label it’s parts.
You have 1 minute think time
You have 2 minutes draw time
How did you do? Watch the video and compare it to your drawing.
EPISD Standards Based Curriculum

3. The term matter describes all of the physical substances around us
Matter is anything that has mass and takes up space
The Universe is made up of matter and energy

4. Matter is made up of atoms
*Matter is made up of atoms. *An atom is the smallest whole particle of matter. * The atom is made of three smaller Sub-Atomic particles: Protons, Neutrons, and Electrons.

5. Early Models of the Atom “Bohr Model”
Electrons move in definite orbits around the nucleus

6. Modern Model of the Atom: “The Electron Cloud”
Spherical cloud of varying density where an electron is more or less likely to be

7. Atomic Structure Nucleus contains: Electron Cloud contains: -Neutrons
-Protons
-Electrons

8. Graphic Organizer

9. Sub-atomic Particle Protons = p+ Located in the nucleus of the atom
Have a positive charge (+)
Mass = 1 amu

10. Sub-atomic Particle Neutrons = n0 Located in the nucleus of the atom
Are Neutral (Have no charge)
Mass = 1 amu

11. Sub-atomic Particle Electrons = e-
Located in the electron cloud around the outside of the nucleus
Have a negative charge (-)
Mass = 1/1840 amu
Smallest sub-atomic particle

12. Watch this video for review
EPISD Standards Based Curriculum

13. Atomic Vocabulary Review
Atom- The smallest piece of a substance
Nucleus – The center of an atom
Protons- Subatomic particle found in the nucleus. It has a positive charge
Neutrons- Subatomic particle found in the nucleus. It has no charge. Neutral.
Electrons - Subatomic particle found in the an area called Energy levels. This is also known as “The Electron Cloud.” Negative charge.
The # of protons is the same as the # of electrons.
The mass of a proton & neutron is 1 amu. The mass of an electron is almost zero.

14. Atomic Structure
Who am I?
Who am I?
Who am I?

15. Describing Atoms Atomic Number = number of protons (# p+)
Tell us the identity of the element.
Atomic number is kind of like your student ID number.
# protons+ or # electrons-
Mass Number = #p+ + #n0
the number of protons + the number of neutrons
Atomic Mass = mass of protons+ + mass of neutrons0 in the nucleus

16. Created by G.Baker www.thesciencequeen.net
Periodic Table
Atomic Number: Number of protons Also # of electrons 8
Element’s Symbol: An abbreviation for the element. O
Oxygen
Elements Name
Atomic Mass/Weight:
Weight of protons + neutrons. 16
Created by G.Baker

17. EPISD Standards Based Curriculum 2012-2013
Log in to Think Central then click on the video
Watch Slides 1, 5,6,7,8
EPISD Standards Based Curriculum