LEARNING HUB connecting Science curricula to everyday applications with LESSON PLANS, lab aids and more
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In collaboration with Washington International School Team Science
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Chemistry 2
Atomic Structure
Periodicity
Phenomenon: see the video about art and the electromagnetic spectrum:
What do you see?
What do you think about?
What do you wonder--what questions arise? Smithsonian American Art Museum
Discover what makes up atoms and how this affects the properties of materials
Patterns arising with elements and their properties
Periodicity: Aerospace connection
The Periodic Table of Aerospace
REACTIONS to Investigate
sodium and chlorine
carbon and oxygen
carbon and hydrogen
HS PS1-2 Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.
FLAME TESTS
Check out the flame test lab using water and the significance of the electron transitions which produce the different colors
Heat elevates electrons to higher energy levels--energy is ABSORBED--"excited" electrons. When the energy is EMITTED, some energy wavelengths in the visible region. Different elements produce different colors because they have different electron energy level transitions:
E = hc
wavelength
h = Planck's constant
c = speed of light
Prior knowledge/Preview
Atomic Structure activity with beans WIS
Review in pictures WIS
Elements of the Periodic Table from the Washington International School WIS
Inquiry science
Printable activity: History of Atomic Theory: Poster and Questions
<-- On-line activity INTRO electron configuration activity Washington International School
LAB experiments
Lab #1 Seeing periodicity
Lab #2 Reaction: sodium + chlorine WIS What happens to electrons as Na -> Na+ and Cl -> Cl- ?
Lab #3 Activity Protons and Atomic #
Lab #4 Flame tests WIS
Lab #5 Spectral tubes of H, He, N, Ne and identifying interstellar materials WIS
EXTENSION material for the curious
Timeline of Atomic Structure discovery and aviation timeline Washington International School
Looking at gallium: element 31
from Smithsonian Associates lecture: Take a Guided Tour of the Periodic Table with Callan Bentley and Pirabi Swaminathan
Investigating electrons--the cathode-ray tube Washington International School
Atomic Model Building in the Maker Space WIS
Science conneXions with Aerospace
1. Atomic structure
2. Periodic Table/ Periodicity
3. Electromagnetic spectrum