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BE FIRST!

In Your Class
In Your School
In Your State
In Your Country
In The World!

Science Level II
THIS WEEK'S
MATH & SCIENCE
LEVEL II CHALLENGE

OXIDATION-REDUCATION REACTIONS

Use the K-12 TLC Guide to Chemistry to help you answer the following:

   1). What is the oxidation number of chlorine in KClO3?

   2).Some organisms use redox reactions to produce light in a process known as:

   3). When sodium reacts with sulfur to form sodium sulfide it:

  out of 3.  

You Must Answer All Questions Before You Can Check Your Score


Your Honor Roll ranking depends on the date and time you submit your perfect score.
If you check your score and have a perfect score - no problem.
2 hours will be added to your submit time for each missed question.

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Each student may only submit answers once per subject level each week.
If you submit answers for the same subject level more than once, you will be disqualified.
STUDENTS ARE ENCOURAGED
TO RESEARCH THEIR ANSWERS

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Oxidation-Reduction


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