Closed packed derections.. are derections of the lines drawn through atoms such that no void space is in bitween..
Refer this, i also got the idea from here
http://books.Google.lk/books?id=wh4v6UWjYdIC&pg=PA5&dq=close%2Bpacked%2Bdirections&hl=en&ei=vo3WTKLbIYKYvAPp_ZXqCQ&sa=X&oi=book_result&ct=result&resnum=1&ved=0CCYQ6AEwAA#v=onepage&q=close%2Bpacked%2Bdirections&f=false
vibrate
The molecules move freely and rapidly in all directions.
Yes, the crystalline structure of zinc is hexagonal.
It forms a face-centered cubic crystals. Under pressure these change to hexagonal close packed (hcp) crystals.
BECAUSE in case of stone the molecules are closly packed and they have no vacant space between them and they have not the ability to close to each other so when we compress a stone we cant compress it
What is a Hexagonal close packed lattice and what is sign it?"
particles in a solid are packed so close together they can only
densely means to collide and packed together means to be close. so put it together "collided and close".
In square close-packed layer, a molecule is in contact with four of its neighbours. Therefore, the two-dimensional coordination number of a molecule in square close-packed layer is 4.
No, they are spread out. Gases are less dense than solids and liquids, which is caused by the particles being spread out.
compact, packed, close, compressed
Full Extension
CPH also frequently called HCP - is Close Packed Hexagonal (or hexagonal close packed). It is an arrangement of atoms in a crystal structure. It can mean quite a few other things, one of which is the IATA code for Copenhagen airport. See the related link for more information.
it has 12 neighbors
vibrate
no, the air inside balloons is a gas and therefore the particles are moving quickly and are spread out, bouncing off the sides of the balloon. Particles in solids are packed close together.
No it is a compound measure of how close together matter is packed in an object.