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Alchemy Unit – Investigation III

Technicolor Atoms

© 2004 Key Curriculum Press.

Unit 1 • Investigation III

Admit Slip

What do you think would happen if an electron were moved within an atom?



The Big Question

• What happens when electrons move within an atom?



Students will be able to:

• Observe what happens to different ionic compounds when heat is added.


Agenda

• Admit Slip• Homework Review• Notes• Technicolor Atoms Lab• Exit Slip




Homework Review

1.

P: 1s22s22p63s23p3

Ni: 1s22s22p63s23p64s23d8

Au: 1s22s22p63s23p64s23d104p65s24d105p6

6s24f145d9



Element Electron configuration Valence electrons

Aluminum, Al [Ne] 3s23p1 3s23p1

Sodium, Na [Ne] 3s1 3s1

Nitrogen, N [He] 2s22p3 2s22p3

Titanium, Ti [Ar] 4s23d2 4s23d2

Sulfur, S [Ne] 3s23p4 3s23p4

Tin, Sn [Kr] 5s24d105p2 5s25p2

Arsenic, As [Ar] 4s23d104p3 4s24p3

Oxygen, O [He] 2s22p4 2s22p4

Tellurium, Te [Kr] 5s24d105p4 5s25p4

Chlorine, Cl [Ne] 3s23p5 3s23p5

Bromine, Br [Ar] 4s23d104p5 4s24p5

Iodine, I [Kr] 5s24d105p5 5s25p5



Question 3

•The last three electron configurations all have similar valence electrons 3s23p5 4s24p5 5s25p5 because they all have 7 valence electrons and are in the same group/column. They are halogens.


Noble Gas Electron Configuration 10/28/10• The noble gas electron configuration of an

element starts with the noble gas that comes before the element in brackets and then continues from there to the element.

• Ex. For the element Ca, that would be [Ar]4s2

• The valence electrons are the highest level electrons. For example, if the configuration is [Kr]5s24d105p4 , the valence electrons are 5s25p4 .



Technicolor Atoms Lab

• Please bring your paper and a writing utensil next door. Leave everything else.

• Do not touch anything when you get into the lab!



Post-Lab Questions




Exit Slip

Predict the color of the flames produced when heating the following substances. Explain your thinking.

Copper carbonate

Lithium sulfate