Unit 1
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片预览 (24 张)
Organic compounds are found in majority of the common products such as
medicines, plastic materials and food
Main constituents of organic compounds are
carbon, hydrogen and nonmetals like oxygen, nitrogen, halogens.
carbon, hydrogen and nonmetals like oxygen, nitrogen, halogens. consist of
molecules and not ions
Carbon atoms form what bond
covalent
Carbon atoms are polar or non polar
non polar
carbon atoms have what force
weak intermolecular force
due to carbons weak force what happens to them
they vaporize quickly and has high vapor pressure
what is the boiling point typically for organic liquids
low boiling point
what is the boiling point for organic solids
have low melting points
Inorganic molecules have what bond
ionic
inorganic compunds have what boiling/melting point
higher
are organic compounds soluble or insoluble in water
insoluble
Organic compounds can be represented using two types of formula,
molecular and structural
what form gives a detailed picture of the compound.
structural or expanded
is the general form used in writing a compound’s formula
molecular
is the detailed form written by expanding the formula.
structural
isomers
are compounds with the same molecular formulae but that are structurally different.
they can have different chemical, physical and biological properties.
isomers
types of isomers
depending upon their connectivity: structural & stereo isomers.
STRUCTURAL (Constitutional) ISOMERS:
When two compounds share the same molecular formula, while the arrangement of atoms are different, they are called structural isomers.
How do structural isomers differ
They differ in the order in which the atoms are connected so they can contain different functional groups and / or bonding patterns.
number of possible isomers increase when
carbon skeleton increase in size
what happens In the conversion of one structural isomer to another,
at least one bond must be broken and reformed at a different position in the molecule.
Stereoisomers
are structures with same molecular formula, but different in the way atoms are arranged in 3 dimensional space.