A drop of water placed on a smooth, dry surface will form a dome-shaped droplet instead of flowing outward in different directions. Which of these best explains this observation?

A. The bonds between hydrogen and oxygen atoms are very strong.

Question

A drop of water placed on a smooth, dry surface will form a dome-shaped droplet instead of flowing outward in different directions. Which of these best explains this observation?

A. The bonds between hydrogen and oxygen atoms are very strong. <<My Answer

B. The electrons in the atoms attract the electrons in the other atoms. 

C. Water molecules at the surface experience fewer hydrogen bonds than water molecules within the liquid. 

D. Water molecules near the surface produce more buoyant force than water molecules within the liquid.

anonymous · Answer

I think the answer is A, is that correct?

anonymous · Answer

i think renee u r wrong...

anonymous · Answer

ya its right ..a option is correct u r right...according to http://answers.yahoo.com/question/index?qid=20100706102709AAqiYmG

anonymous · Answer

Well, My second choice was D...

anonymous · Answer

???

anonymous · Answer

i don't know the reason

ash2326 · Answer

Nope a is not correct, it's D. I'm thinking of a proper explanation

anonymous · Answer

ash can u explain it..

dls · Answer

It is due to surface tension,they have to occupy minimum area,that is related with buoyant force,hence D.
A,C&B are potinless options.

experimentx · Answer

the cohesive force is stronger than adhesive force .... the intermolecular bond between water molecule is stronger than intermolecular bond between surface and water.

ash2326 · Answer

On a waxy surface such as a leaf, Water adheres weakly to leaf and strongly to itself, so water clusters into drops. Surface tension gives them their near-spherical shape, because a sphere has the smallest possible surface area to volume ratio. Source- http://en.wikipedia.org/wiki/Surface_tension

anonymous · Answer

Ahhh, okay. I gotcha! :)

anonymous · Answer

Thanks u guys!

anonymous · Answer

ok. concept of surface tension

anonymous · Answer

I have another quick question...

A scientist adds heat to each of the following substances. Which will probably absorb the most heat before its temperature changes significantly?  
50 g of solid copper
50 g of solid iron
50 g of liquid water<<My answer
50 g of sand

experimentx · Answer

if A had talked about hydrogen bond, i would have gone for A.

dls · Answer

Post seperately

anonymous · Answer

okay, will do

dls · Answer

hydrogen bonds are merely simple attractions,you cant relate them with shape of a molecule

anonymous · Answer

thanks again everyone!

experimentx · Answer

surfaces matter .. for some surface the water molecule does not form dome ... while for some surfaces forms smaller dome.

dls · Answer

and yes thhe answer to your second question is water,since it has thehighest specific heat capacity

anonymous · Answer

http://openstudy.com/study#/updates/507ee9efe4b0599919843e2f

anonymous · Answer

ohh thanks :)

anonymous · Answer

u don't have to follow the link then...

anonymous · Answer

did you get both answer right ?