Atoms and Molecules

Atoms and Molecules
Micron Foundation
K-12 Program
August 18, 2015
©2012 Micron Foundation, Inc.
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1
What is Everything made of?
Atoms
and
Molecules
August 18, 2015
©2012 Micron Foundation, Inc.
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2
Democritus
Democritus, 460 – 370 B.C.
“Atom” means “uncuttable”
August 18, 2015
©2012 Micron Foundation, Inc.
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3
Atom Models
Nucleus
-
Protons
+
+
Electrons
-
Neutrons
Bohr (planetary) model of the atom
August 18, 2015
3-D model of an atom
©2012 Micron Foundation, Inc.
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4
August 18, 2015
©2012 Micron Foundation, Inc.
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5
Sodium
Atomic Number
Atomic Symbol
11
Na
Na
Name
Sodium
Sodium
22.99 (23)
Atomic Mass
22.99 (23)
Atomic Number = Number of Protons = 11
Atomic Mass – Atomic Number = Number of Neutrons
23
-
11
=
12
Number of Protons = Number of Electrons = 11
August 18, 2015
©2012 Micron Foundation, Inc.
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6
Atoms – Molecules - Matter
Atoms
Molecules
Matter
August 18, 2015
©2012 Micron Foundation, Inc.
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7
Single Element Molecules
Some molecules are made up of atoms of the same element
H2
Hydrogen
O2
Oxygen
N2
Nitrogen
August 18, 2015
©2012 Micron Foundation, Inc.
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8
Compounds
Molecules made up of two or more elements are called Compounds
H 2O
Water
CH4
Methane
NaCl
Sodium Chloride
CO2
Carbon Dioxide
August 18, 2015
NH3
Ammonia
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9
Activity Stations
Atoms
Molecules
August 18, 2015
©2012 Micron Foundation, Inc.
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10
Ions & Isotopes
Ions
Isotopes
Atoms with “missing” or “extra”
electrons.
Variants of an element with a different
number of neutrons.
Li
Be
Lithium atom
3 protons
4 neutrons
3 electrons
Beryllium atom
4 protons
5 neutrons
4 electrons
Be10
Li+
Lithium ion
3 protons
4 neutrons
2 electrons
August 18, 2015
Beryllium isotope
4 protons
6 neutrons
4 electrons
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Periodic Table – Periods
1
Periods
2
3
4
5
6
7
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12
Orbital Shells & Periods
August 18, 2015
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Periodic Table – Groups
a
1
I
VIII
a
III IV V
II
Periods
2
VI VII
3
4
5
6
7
August 18, 2015
©2012 Micron Foundation, Inc.
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14
Valence Electrons
August 18, 2015
©2012 Micron Foundation, Inc.
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15
Cool Videos
“A Boy and His Atom”
World’s Smallest Movie + Making of the Video
https://www.youtube.com/watch?v=LBpu4OPw6bM
Music Videos about Elements
Meet the Elements: https://www.youtube.com/watch?v=Uy0m7jnyv6U
Elements Song with Periodic Table:
http://www.youtube.com/watch?v=zGM-wSKFBpo&feature=related
Picture of an Electron
http://www.youtube.com/watch?v=ofp-OHIq6Wo&feature=related
Picture of Hydrogen Atom
https://www.youtube.com/watch?v=4G7sq5GVhos
August 18, 2015
©2012 Micron Foundation, Inc.
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