Molecular compound
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In chemistry, a molecular compound, or covalent compound, is a substance formed when two or more elements (usually non-metals) combine to form molecules. This is a chemical compound whose simplest units are molecules. Since they are held together by covalent bonds, they may either be polar or non-polar:
1. Most polar covalent molecules are liquid or solids at room temperature
2. Most non-polar covalent molecules are gases at room temperature, which is due to the fact that a dipole will not form in a non-polar covalent compound. With the absence of partial negative and positive charge, one molecule will not attract another.
Physical properties of molecular compounds:
- low conductivity
- low melting and boiling points
- can be solids, liquids, or gases at room temperature
- they tend to shatter easily
- tend to be relatively soft
- bonds hold together in water
- acts like insulators
A molecular compound is made up of all non-metals. The bond that forms between the atoms is by the sharing of electrons unlike ionic compounds, which are made by the transfer of electrons.
[edit] Examples
H2O NH3 SF6
[edit] See also
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