对应课程:点击查看
起止时间:2020-02-24到2020-06-26
更新状态:已完结
第一章 原子结构及键合 Atomic structure and bonding 第一章 原子结构及键合 测验
1、 Ionic bonding is formed by ( )
A:valence electron transfer
B:shared electron pair
C:free electron and cation
D:attraction of the electric dipoles
答案: valence electron transfer
2、 Covalent bonding is formed by ( )
A:shared electron pair
B:valence electron transfer
C:free electron and cation
D:attraction of the electric dipoles
答案: shared electron pair
3、 Metallic bonding is formed by ( )
A:free electron and cation
B:valence electron transfer
C:shared electron pair
D:attraction of the electric dipoles
答案: free electron and cation
4、 Crystals which are mainly formed by metallic bonding
A:hardness is either high or low
B:solid conductive
C:liquid conductive
D:high melting point
E:poor plasticity
答案: hardness is either high or low ;
solid conductive ;
liquid conductive
5、 Crystals which are mainly formed by ionic bonding:
A:high melting point
B:poor plasticity
C:low hardness
D:solid conductive
E:liquid non-conductive
答案: high melting point;
poor plasticity
6、 Molecular bonds are directional.
A:正确
B:错误
答案: 错误
7、 Hydrogen bonding is directional.
A:正确
B:错误
答案: 正确
8、 Generally speaking, the bonding energy of ionic bonding is stronger than that of covalent bonding.
A:正确
B:错误
答案: 正确
9、 Covalent bonding is directional.
A:正确
B:错误
答案: 正确
10、 The bonding energy of metallic bonding varies greatly.
A:正确
B:错误
答案: 正确
11、 Metallic bonding is directional.
A:正确
B:错误
答案: 错误
第二章 晶体的结构 (一）：晶体结构与空间点阵 Crystal structure and space lattice 第二章 晶体的结构（一）：测验
1、 Cubic crystal system includes：
A:simple cubic
B:face-centered cubic
C:body-centered cubic
D:base-centered cubic
答案: simple cubic;
face-centered cubic;
body-centered cubic
2、 Orthorhombic crystal system includes:
A:simple orthorhombic
B:base-centered orthorhombic
C:face-centered orthorhombic
D:body-centered orthorhombic
答案: simple orthorhombic;
base-centered orthorhombic;
face-centered orthorhombic;
body-centered orthorhombic
3、 The types of crytsal structure are countless.
A:正确
B:错误
答案: 正确
4、 All the points within the crystal structure and space lattice represent real atoms.
A:正确
B:错误
答案: 错误
5、 Similar crystal structures can belong to different space lattices.
A:正确
B:错误
答案: 正确
6、 Different crystal structures can belong to a same space lattice.
A:正确
B:错误
答案: 正确
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