Most chemical reactions of an organic compound involve only a few of its numerous atoms; the remainder stay unchanged.
A: majority
B: distribution
C: rest
D: stability
A: majority
B: distribution
C: rest
D: stability
C
举一反三
- A compound consists of atoms ______ different chemical properties. A: of B: by C: for D: with
- A chemical compound that contains two atoms of oxygen and one atom of another chemical element is called ______
- What is the most appropriate definition of conformation? A: The chemical formula of a molecule B: The fixed arrangement of atoms dictated by the bonds of a molecule C: The three dimensional structure a molecule is most likely to adopt, given its chemical formula D: The (potentially flexible) spatial arrangement of atoms around fixed bonds in a molecule
- Most of the problems are easy. Only _______ are difficult. A: few B: little C: a few D: a little
- We can _____ with people in the most parts of the world by telephone. A: involve B: stay C: communicate D: demand
内容
- 0
In organic compounds, single bond is σ bond, only one of double bond and three bond is σ bond, the rest is π bond.
- 1
Although the atoms buried in the interior of a protein have no direct contact with the ligand, they provide an essential scaffold that gives the surface its contours and chemical properties.
- 2
The structure of this 27-carbon compound suggests a complex biosynthetic pathway, but all of its carbon atoms are provided by a single precursor—_______. A: formic acid B: acetate C: propionate D: pyruvate
- 3
The changes of chemical reactions include:
- 4
In organic compounds, single bond is σ bond, only one of double bond and three bond is σ bond, the rest is π bond. A: 正确 B: 错误