MacArthur MS Curriculum 2013-2014 Atoms http://www.dilleyisd.net/apps/pages/index.jsp?uREC_ID=327456&type=u&pREC_ID=426200 MacArthur MS Curriculum 2013-2014

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. http://youtu.be/hhbqIJZ8wCM EPISD Standards Based Curriculum 2012-2013

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

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.

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

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

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

Graphic Organizer

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

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

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

Watch this video for review http://studyjams.scholastic.com/studyjams/jams/science/matter/atoms.htm EPISD Standards Based Curriculum 2012-2013

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.

Atomic Structure Who am I? Who am I? Who am I?

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

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 www.thesciencequeen.net

EPISD Standards Based Curriculum 2012-2013 Log in to Think Central then click on the video https://www-k6.thinkcentral.com/ePC/start.do Watch Slides 1, 5,6,7,8 EPISD Standards Based Curriculum 2012-2013