some chemistry quiz

i didn't anything up. most of the ones i missed i knew at one point. some i got right, i never knew. they shoudl show me all of them.
Your Score Summary

Total Test Points = 26
Points Obtained = 19
Raw Score (Percent * 10) = 730

Overall, you scored as follows:

40% scored higher,
9% scored the same, and
51% scored lower.


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Average scores by background:
No chemistry = 542
High school chemistry = 653
Some college chemistry = 721
A lot of college chemistry = 783
Chemistry is/was a job = 810

For your background, you scored as follows:



47% scored higher,
12% scored the same, and
41% scored lower.

Average scores by chemistry importance:
Not important = 601
A little important = 645
Very important = 714
The world needs it = 729

For your background, you scored as follows:



27% scored higher,
9% scored the same, and
63% scored lower.

Here is the breakdown of your incorrect answers:

Q:How many valance electrons are on elemental carbon?
Your answer: 3
Correct answer: 4

Q:What is the most active nonmetallic element?
Your answer: Oxygen
Correct answer: Fluorine

Q:Which group below consists completely of noble gasses?
Your answer: Oxygen, Nitrogen, and Neon
Correct answer: Radon, Krypton, and Neon

Q:What is the common name of CaCO3 ?
Your answer: Calcium carbonite
Correct answer: Calcite

Q:If you ignite a balloon filled with hydrogen, what are the products?
Your answer: Hydroxide ions
Correct answer: Water and heat

Q:What does sulfur smell like?
Your answer: Rotten eggs
Correct answer: It is odorless

Q:What is the primary ingredient in vinegar?
Your answer: Acetic acid
Correct answer: Water"