test your elementary chemistry IQ!

[SacrosanctFiend]

10/10, anything else would be embarassing seeing as how I just graduated with a BCMB degree.

 

[SacrosanctFiend]

Originally posted by: mordantmonkey
bs, they didn't say most abundant above the crust of the earth. wikipedia > encarta.
10/10. regraded by me.

Oxygen is the most abundant element, making up ~47% of the Earth's mass. You lose.

 

[IAteYourMother]

9/10. Damn abundance question ><

 

[mobobuff]

8/10

 

[MartyMcFly3]

8/10

 

[Dedpuhl]

Originally posted by: Toastedlightly
I got 8/10

 

[slpaulson]

8
I got the Sulfer one and the most abundant element wrong.

 

[mordantmonkey]

Originally posted by: SacrosanctFiend

Originally posted by: mordantmonkey
bs, they didn't say most abundant above the crust of the earth. wikipedia > encarta.
10/10. regraded by me.

Oxygen is the most abundant element, making up ~47% of the Earth's mass. You lose.

that would be the crust. they didn't specify whether mass or molarity. if it was molarity then it would be hydrogen i thought. so i went by mass. and i also assumed the entire earth not just upper crust+atmosphere.

EDIT:
Taken as a whole, the Earth's chemical composition (by mass) is:

34.6% Iron
29.5% Oxygen
15.2% Silicon
12.7% Magnesium
2.4% Nickel
1.9% Sulfur
0.05% Titanium

You lose

 

[Legendary]

9/10, missed abundant element

 

[kermalou]

You have potential as a chemist. You got 7/10 correct.

got sulfur, not an element, and the pennies

 

[dullard]

9/10. I thought the answer was iron. The must be thinking of the crust only or new information about the core was recently discovered. Either way, it isn't a good question since they never defined "most abundant".

 

[SacrosanctFiend]

Originally posted by: mordantmonkey
that would be the crust. they didn't specify whether mass or molarity. if it was molarity then it would be hydrogen i thought. so i went by mass. and i also assumed the entire earth not just upper crust+atmosphere.

The inner core is only 1.9% of the Earth's overall mass. The outer core is thought to be mostly iron, but 10% of the lighter element is thought to be oxygen. Most of Earth's mass lies in the mantle, which contains a good deal of oxygen as well (and less of iron). Then you have oxygen comprising most of the crust. Oxygen is found in many solids, the most common iron ore, for example, is Fe2O3. It is, also, in many liquids and gases. Look into mantle composition.

 

[geecee]

9/10. Missed the sulfur question as well.

 

[neonerd]

Originally posted by: pancho619
10/10 :thumbsup: