2024知到答案 大学化学(山东联盟) 完整智慧树网课章节测试答案
第一章 单元测试
文章目录
1、判断题:
Mixtures and pure substances can be separated by physical.( )
选项:
A:对
B:错
答案: 【对】
2、判断题:
Celsius is the unit of the temperature.( )
选项:
A:错
B:对
答案: 【对】
3、判断题:
Systematic errors caused by limitations in an experimenter's skill or ability to read a scientific instrument. ( )
选项:
A:对
B:错
答案: 【错】
4、判断题:
In physical change, some of the physical properties of the sample may change, and its composition changed.( )
选项:
A:对
B:错
答案: 【对】
5、判断题:
There is a temperature at which °C and °F have the same value.( )
选项:
A:对
B:错
答案: 【对】
第二章 单元测试
1、判断题:
Cathode rays are deflected (偏转) in an electric field( )
选项:
A:对
B:错
答案: 【对】
2、判断题:
STP usually refers to the temperature of 0℃ and the pressure of 101.325 kPa( )
选项:
A:错
B:对
答案: 【对】
3、判断题:
Alkali metals are all first period elements( )
选项:
A:错
B:对
答案: 【错】
4、判断题:
There are as many electrons outside the nucleus as there are units of positive charge on the nucleus. The atom as a whole is electrically neutral( )
选项:
A:对
B:错
答案: 【对】
5、判断题:
X-rays are harmless to the human body( )
选项:
A:错
B:对
答案: 【错】