Atomic Model - 无忧得胜-网上国际课程 (5edu.win)

1#

94.09: An atomic mass unit is approximately equtj g;hiz e8k0oxcvb0 ie8 x.6.al to the mass of a(n):

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2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

02.10: In Rutherford's famous gold foil scattering ex b+lxfa1 nyrw2c3v6k ()xyev5 periment, he found that most alpha particles would pass through the foil undeflected. Which of6vv 2 ( +w3)aly1bncekxyx5fr the following nuclear properties can be inferred from this observation?

A. The nucleus must have a positive charge

B. Most of the mass of an atom is in the nucleus

C. The nucleus contains both protons and neutrons

D. The diameter of the nucleus is small compared to the diameter of the atom

E. None of the above

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

12.37: The cylindrical head of an alumi;3j 2.f2dd*jnoh ct p h,*q2vn euty.bnum nail has a diameter of 1.00 cm. For the top layer of atoms in the nail’s head, which one of the following choices best represents t,2dv bn. u ec;*dt3jh.nhqy*22 fopt jhe number of aluminum atoms in that layer?

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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

15.31: Approximately how many hydrogen atoms are there in the liquid watero.4 +d3d ;ffechctu -l of Ear+e3fh.cu td-4dlo c;fth’s oceans?

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5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

06.47: The sub-atomic make-up of a proton *2seu6*k ljt833fyp)oajru - h rwyy5is

A. 2 up quarks and a down quark

B. 2 down quarks and an up quark

C. 1 up quark, 1 down quark, and 1 top quark

D. 1 up quark, 1 strange quark, and 1 bottom quark

E. 2 strange quarks and 1 charmed quark

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6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

13.46: Which one of the following quarks was the last pf teo-e mon37/9ng* zto be confirmed experimentalofpnoz3e /nm 9*-7t gely?

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