Atomic Model - 无忧得胜-网上国际课程 (5edu.win)

1#

94.09: An atomic mass unit is aaf2c xw5wr jeg8n h 73ax5(fo8pproximately equal 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 /. stqd7pp+ bxfoil scattering experiment, he found that most alpha particles would pass through the fb.7sqxd+ p /ptoil undeflected. Which of 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 aluminum nail has a diameter of 1.00 cm. mh.t21n okug0:q f8a /jwuj3j For the top layer of atoms in the nail’s head, which one of the following choices best represents the number ofm8uw3 o :qjt. /j0ufn1 jk2gah 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 atoh9 g+-xfkd 4yw qb 59eoch17wtms are there in the liquid water of Earwdth9ey- k4cw q 95bh1f xo7+gth’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 is+ ofqj7b62l m2bt(jwz)*uwv d

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 to by xlo,) ot:8zau v9r(be confirmed experimentally tv8rl:b9o,(oux ayz)?

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