Concept explainers
(a)
Interpretation:
The description “It has a regular pattern” refers to a crystalline solid or amorphous solid has to be given.
Concept Introduction:
Crystalline solid:
The solids in which the constituent particles of matter are arranged and organized in a specific manner are called crystalline solid. These solids contain crystals in their structure and each crystal has definite geometry. Almost all solids fall in the category of crystalline solids including metallic elements iron, silver and copper and non-metallic elements phosphorous, sulphur and iodine.
Amorphous solid:
The solids in which the constituent particles of matter are arranged in a random manner are called amorphous solids. It is a non-crystalline solid with no proper arrangement of atoms in the solid lattice. The most common examples of amorphous solids are glass.
(b)
Interpretation:
Plastic refers to a crystalline solid or amorphous solid has to be given.
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
The description “It has a no regular pattern” refers to a crystalline solid or amorphous solid has to be given.
Concept Introduction:
Refer to part (a).
(d)
Interpretation:
Glass refers to a crystalline solid or amorphous solid has to be given
Concept Introduction:
Refer to part (a).
(e)
Interpretation:
Gold refers to a crystalline solid or amorphous solid has to be given
Concept introduction:
Refer to part (a).
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FOUND.OF COLLEGE CHEMISTRY
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- Explain why 15 g of steam at 100C melts more ice than 15 g of liquid water at 100C.arrow_forwardDescribe the crystal structure of iron, which crystallizes with two equivalent metal atoms in a cubic unit cell.arrow_forwardAs it cools, olive oil slowly solidifies and forms a solid over a range of temperatures. Which best describes the solid? (a) ionic (b) covalent network (c) metallic (d) amorphous (e) molecular crystalsarrow_forward
- Give the formula of a solid containing Si that is (a) molecular (b) ionic (c) network covalentarrow_forwardNaH crystallizes with the same ciystal structure as NaCl. The edge length of the cubic unit cell of NaH is 4.880. (a) Calculate the ionic radius of H. (The ionic radius of Li+ is 0.0.95 .) (b) Calculate the density of NaH.arrow_forwardDescribe the structural units in (a) C (graphite) (b) SiC (c) FeCl2 (d) C2H2arrow_forward
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