2024智慧树网课答案 Basic Chemistry 基础化学 最新完整智慧树知到满分章节测试答案

第一章 单元测试

1、 问题:Solids have a _ shape and are not appreciably _.
选项：
A:definite, compressible
B:definite, incompressible
C:indefinite, compressible
D:indefinite, incompressible
E:sharp, convertible
答案: 【
definite, compressible
】

2、 问题:The symbol for the element potassium is ____.
选项：
A:Pt
B:P
C:K
D:S
E:Ca
答案: 【
K
】

3、 问题:

The SI unit for mass is ____.

选项：
A:

kilogram

B:

gram

C:

pound

D:

troy ounce

答案: 【

kilogram

】

4、 问题:The temperature of 25°C is ____ in kelvins.
选项：
A:103
B:138
C:166
D:248
E:298
答案: 【
298
】

5、 问题:The density of silver is 10.5 g/cm3. A piece of silver with a mass of 61.3 g would occupy a volume of ____ cm3.
选项：
A:0.171
B:644
C:10.5
D:0.00155
E:5.84
答案: 【
5.84
】

6、 问题:The correct result of the molecular mass calculation for H2SO4 is __. 4 × 15.9994 + 32.066 + 2 × 1.0079
选项：
A:98.08
B:98.079
C:98.074
D:98.838
E:98.84
答案: 【
98.079
】

7、 问题:There are ____ significant figures in the answer to the following computation: (29.2 – 20.0) (1.79 × 105)/1.39
选项：
A:1
B:2
C:3
D:4
E:5
答案: 【
2
】

8、 问题:Of the following, ____ is the smallest mass.
选项：
A:25 kg
B:2.5 × 10-2 mg
C:2.5 × 1015 pg
D:2.5 × 109 fg
E:2.5 × 1010 ng
答案: 【
2.5 × 109 fg
】

9、 问题:Accuracy refers to ____.
选项：
A:how close a measured number is to zero
B:how close a measured number is to the calculated value
C:how close a measured number is to other measured numbers
D:how close a measured number is to the true value
E:how close a measured number is to infinity
答案: 【
how close a measured number is to the true value
】

10、 问题:In which one of the following numbers are all of the zeros significant?
选项：
A:100.09009
B:0.14329
C:0.05843
D:0.1
E:0.003002
答案: 【
100.09009
】

第二章 单元测试

1、 问题:A certain mass of carbon reacts with 13.6 g of oxygen to form carbon monoxide. ____ grams of oxygen would react with that same mass of carbon to form carbon dioxide, according to the law of multiple proportions?
选项：
A:25.6
B:6.8
C:13.6
D:136
E:27.2
答案: 【
27.2
】

2、 问题:Which statement below correctly describes the responses of alpha, beta, and gamma radiation to an electric field?
选项：
A:Both beta and gamma are deflected in the same direction, while alpha shows no response
B:Both alpha and gamma are deflected in the same direction, while beta shows no response
C:Both alpha and beta are deflected in the same direction, while gamma shows no response
D:Alpha and beta are deflected in opposite directions, while gamma shows no response
E:Only alpha is deflected, while beta and gamma show no response
答案: 【
Alpha and beta are deflected in opposite directions, while gamma shows no response
】

3、 问题:_ and _ reside in the atomic nucleus.
选项：
A:Protons, electrons
B:Electrons, neutrons
C:Protons, neutrons
D:none of the above
E:Neutrons, only neutrons
答案: 【
Protons, neutrons
】

4、 问题:Which one of the following is not true concerning cathode rays?
选项：
A:They originate from the negative electrode
B:They travel in straight lines in the absence of electric or magnetic fields
C:They impart a negative charge to metals exposed to them
D:They are made up of electrons
E:The characteristics of cathode rays depend on the material from which they are emitted
答案: 【
The characteristics of cathode rays depend on the material from which they are emitted
】

5、 问题:The charge on an electron was determined in the ____.
选项：
A:cathode ray tube, by J. J. Thompson
B:Rutherford gold foil experiment
C:Millikan oil drop experiment
D:Dalton atomic theory
E:atomic theory of matter
答案: 【
Millikan oil drop experiment
】

6、 问题:In the Rutherford nuclear-atom model, ____.
选项：
A:the heavy subatomic particles, protons and neutrons, reside in the nucleus
B:the three principal subatomic particles (protons, neutrons, and electrons) all have essentially the same mass
C:the light subatomic particles, protons and neutrons, reside in the nucleus
D:mass is spread essentially uniformly throughout the atom
E:the three principal subatomic particles (protons, neutrons, and electrons) all have essentially the same mass and mass is spread essentially uniformly throughout the atom
答案: 【
the heavy subatomic particles, protons and neutrons, reside in the nucleus
】

7、 问题:All atoms of a given element have the same ____.
选项：
A:mass
B:number of protons
C:number of neutrons
D:number of electrons and neutrons
E:density
答案: 【
number of protons
】

8、 问题:An atom of the most common isotope of gold, 197Au, has _ protons, _ neutrons, and ____ electrons.
选项：
A:197, 79, 118
B:118, 79, 39
C:79, 197, 197
D:79, 118, 118
E:79, 118, 79
答案: 【
79, 118, 79
】

9、 问题:Which combination of protons, neutrons, and electrons is correct for the isotope copper-63, ?
选项：
A:29 p+ , 34 n°, 29 e−
B:29 p+ , 29 n°, 63 e−
C:63 p+ , 29 n°, 63 e−
D:34 p+ , 29 n°, 34 e−
E:34 p+ , 34 n°, 29 e−
答案: 【
29 p+ , 34 n°, 29 e−
】

10、 问题:Isotopes are atoms that have the same number of _ but differing number of _.
选项：
A:protons, electrons
B:neutrons, protons
C:protons, neutrons
D:electrons, protons
E:neutrons, electrons
答案: 【
protons, neutrons
】

第三章 单元测试

1、 问题:____ is credited with developing the concept of atomic numbers.
选项：
A:Dmitri Mendeleev
B:Lothar Meyer
C:Henry Moseley
D:Ernest Rutherford
E:Michael Faraday
答案: 【
Henry Moseley
】