"deformed"

Boost your MCAT score by 12 points or more.
This forum made possible through the generous support of SDN members, donors, and sponsors. Thank you.
C

chiddler

Full Member
10+ Year Member
Joined
Apr 6, 2010
Messages
2,439
Reaction score
4
Points
4,551
  1. Medical Student
Members do not see this ad.
"Which solid deforms upon heating at atmospheric pressure?"

deform
v 1: make formless;
v 2: twist and press out of shape

This is the explanation which illustrates what this word means:
"The deformation of a solid can be associated with the change of solid phase from solid A to solid B. [This solid has two solid phases]."

Changing solid phases is changing the lattice structure of said solid. I wouldn't expect it to deform. I would expect this term to mean solid to liquid or gas.

Is this a scientific term that i'm unaware of or is TBR just cool like that?

thank you.
 
Sort by date Sort by votes
amorphous solids like glass will deform when heated at atmospheric pressures...

dsoz
 
Upvote 0 Downvote
Think about a diamond changing to a graphite. As the lattice structure changes, the shape of the object will have to change itself - you cannot rearrange all the atoms without some changes of the whole object.
 
Upvote 0 Downvote
milski said:
Think about a diamond changing to a graphite. As the lattice structure changes, the shape of the object will have to change itself - you cannot rearrange all the atoms without some changes of the whole object.
Click to expand...

yes that's true.

can you think of why solid --> gas/liquid is not included in this definition?
 
Upvote 0 Downvote
chiddler said:
yes that's true.

can you think of why solid --> gas/liquid is not included in this definition?
Click to expand...

Neither of them has a shape. Wether losing shape is deformation or not is a question more worthy for a philosophy class. After all, there's not solid left to be considered deformed.
 
Upvote 0 Downvote
also, for this passage: "How can the 2 different solids be explained for both of the compounds?" -- Why can't "the two solids have different connectvity of atoms" be an answer. The answer is "the 2 solids have different lattice structures.

If the 2 compounds are different, wouldn't they have different connectivity of atoms, and thus different lattice structures?
 
Last edited:
Upvote 0 Downvote
the definition of phase change. it's because if they are in different phases, then the molecules that comprise the solid are by definition differently arranged in space. if they change connectivity, then it is no longer the same solid but something else; this is not a phase change.
 
Upvote 0 Downvote
ilovemedi said:
anyone still know why different connectivity doesn't mean different solids?
Click to expand...

chiddler said:
the definition of phase change. it's because if they are in different phases, then the molecules that comprise the solid are by definition differently arranged in space. if they change connectivity, then it is no longer the same solid but something else; this is not a phase change.
Click to expand...
Connectivity in this case is then referring to intramolecular bonds (which determine the compound) as opposed to intermolecular bonds which determine the properties of the solid.
 
Upvote 0 Downvote
It's just a badly worded question. I would take "deform" to mean any change in shape including from solid to liquid.
 
Upvote 0 Downvote
You must log in or register to reply here.
Top Bottom