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Chemistry 10/18/2016

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Christopher Horras

on 18 October 2016

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Transcript of Chemistry 10/18/2016

October 18th, 2016
Class Activity 20
Lab 8: Create a Rainbow of Flames
To Submit on Friday
Write a proper paragraph explaining why different chemicals make different colored flames. (1 per group)
1) Create a plan to make a rainbow of colors in the lab on Thursday.

2) Make a list of materials you will need.

3) Discuss your plan with Mr. Horras

4) Email the list of materials to Mr. Horras at chorras@bk.org

4) Make your rainbow on Thursday.
1) Which atom has a greater effective nuclear charge? Prove with drawings/calculations. Show your work.

a) Na or Cl
b) Ca or S
c) H or F
d) K or O

2) Which atom has a larger atomic radius?
a) Na or Cl
b) Ca or S
c) H or F
d) K or O

3) Which atom has a greater electronegativity?
a) Na or Cl
b) Ca or S
c) H or F
d) K or O

4) Sketch an outline of the periodic table, and use arrows to show the periodic trends for effective nuclear charge, atomic radius, and electronegativity.
Bell Ringer
1) Define the following terms:

a) Effective Nuclear Charge
b) Atomic Radius
c) Electronegativity

2) Determine the effective nuclear charge of the following neutral atoms:

a) H
b) C
c) O
d) Cl
e) Ca
f) Na
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