Question 1

When an alpha particle hits a   nucleus, one of the products is a proton. The other product is

Accepted Answer

A)    
B)    
C)    
D)  none of these. 
A)    
B)    
C)    
D)  none of these.

Question 2

When an unstable Es nucleus undergoes gamma decay, the nucleus formed is that of

Accepted Answer

A)  Es. 
B)  Md. 
C)  Cf. 
D)  Bk. 
E)  Fm. 
A)  Es. 
B)  Md. 
C)  Cf. 
D)  Bk. 
E)  Fm.

Question 3

The United States' effort to build an atomic bomb was named the ______________ Project.

Accepted Answer

The answer of The United States' effort to build an...

Question 4

Tell why each nuclide shown is unstable. Explain your reasoning in each case.

Accepted Answer

³³Cl has fewer neutrons than pro

Question 5

Radioactivity was discovered in

Accepted Answer

A)  Berlin. 
B)  Berkeley. 
C)  Paris. 
D)  Cambridge. 
A)  Berlin. 
B)  Berkeley. 
C)  Paris. 
D)  Cambridge.

Question 6

The diameter of the average nucleus is about ______________ m.

Accepted Answer

The answer of The diameter of the average nucleus is...

Question 7

Natural uranium contains about what percentage of the fissionable isotope 235U?

Accepted Answer

A)  50% 
B)  99% 
C)  1% 
D)  19% 
A)  50% 
B)  99% 
C)  1% 
D)  19%

Question 8

Oak Ridge, Tennessee, was built to separate

Accepted Answer

A)  235U from 238U. 
B)  14C from 12C. 
C)  2H from 1H. 
D)  239Pu from 238U. 
A)  235U from 238U. 
B)  14C from 12C. 
C)  2H from 1H. 
D)  239Pu from 238U.

Question 9

When   decays to   , a(n) ______________ is emitted.

Accepted Answer

A)  beta particle 
B)  deuteron 
C)  gamma ray 
D)  alpha particle 
A)  beta particle 
B)  deuteron 
C)  gamma ray 
D)  alpha particle

Question 10

A positron is the _______________of an electron.

Accepted Answer

The answer of A positron is the _______________of an electron....

Question 11

The half-life of    
is 6.0 h. What fraction of an original sample of this radionuclide would remain after 30.0 h have elapsed?

Accepted Answer

Question 12

When an unstable Ir nucleus undergoes alpha decay, the nucleus formed is that of

Accepted Answer

A)  Ir. 
B)  Au. 
C)  Os. 
D)  Re. 
E)  Pt. 
A)  Ir. 
B)  Au. 
C)  Os. 
D)  Re. 
E)  Pt.

Question 13

An endoergic reaction

Accepted Answer

A)  releases energy. 
B)  requires a high temperature. 
C)  occurs only in stars. 
D)  absorbs energy. 
A)  releases energy. 
B)  requires a high temperature. 
C)  occurs only in stars. 
D)  absorbs energy.

Question 14

After three half-lives have elapsed, what fraction of the original amount of radionuclide remains?

Accepted Answer

A)  1/3 
B)  1/4 
C)  1/8 
D)  None of these 
A)  1/3 
B)  1/4 
C)  1/8 
D)  None of these

Question 15

The strong nuclear force is

Accepted Answer

A)  strongly repulsive for distances less than 10-14 m and strongly attractive for larger distances. 
B)  zero for distances less than 10-14 m and strongly attractive for larger distances. 
C)  strongly attractive for distances less than 10-14 m and zero for larger distances. 
D)  strongly attractive for distances less than 10-14 m and repulsive for larger distances. 
A)  strongly repulsive for distances less than 10-14 m and strongly attractive for larger distances. 
B)  zero for distances less than 10-14 m and strongly attractive for larger distances. 
C)  strongly attractive for distances less than 10-14 m and zero for larger distances. 
D)  strongly attractive for distances less than 10-14 m and repulsive for larger distances.

Question 16

Only four nuclides having an ______________ number of protons and an ______________ number of neutrons are stable.

Accepted Answer

The answer of Only four nuclides having an ______________ number...

Question 17

Write the equation for the alpha decay of    
.

Accepted Answer

Question 18

What is the symbol for the element whose atoms have 92 protons each?

Accepted Answer

A)  Nb 
B)  U 
C)  Zn 
D)  None of these 
A)  Nb 
B)  U 
C)  Zn 
D)  None of these

Question 19

Thermonuclear warheads, or hydrogen bombs, are powerful mainly because of the

Accepted Answer

A)  fission process. 
B)  fusion process. 
C)  absorption of neutrons by 238U. 
D)  emission of protons by 238U. 
A)  fission process. 
B)  fusion process. 
C)  absorption of neutrons by 238U. 
D)  emission of protons by 238U.

Question 20

A positron is symbolized by

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

When an alpha particle hits a nucleus, one of the products is a proton. The other product is

When an unstable Es nucleus undergoes gamma decay, the nucleus formed is that of

The United States' effort to build an atomic bomb was named the ______________ Project.

Tell why each nuclide shown is unstable. Explain your reasoning in each case.

Radioactivity was discovered in

The diameter of the average nucleus is about ______________ m.

Natural uranium contains about what percentage of the fissionable isotope ²³⁵U?

Oak Ridge, Tennessee, was built to separate

When decays to , a(n) ______________ is emitted.

A positron is the _______________of an electron.

The half-life of $The half-life of <sub> </sub> is 6.0 h. What fraction of an original sample of this radionuclide would remain after 30.0 h have elapsed?$ is 6.0 h. What fraction of an original sample of this radionuclide would remain after 30.0 h have elapsed?

When an unstable Ir nucleus undergoes alpha decay, the nucleus formed is that of

An endoergic reaction

After three half-lives have elapsed, what fraction of the original amount of radionuclide remains?

The strong nuclear force is

Only four nuclides having an number of protons and an number of neutrons are stable.

Write the equation for the alpha decay of .

What is the symbol for the element whose atoms have 92 protons each?

Thermonuclear warheads, or hydrogen bombs, are powerful mainly because of the

A positron is symbolized by

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Exam 10: Organic Chemistry

When an alpha particle hits a nucleus, one of the products is a proton. The other product is

When an unstable Es nucleus undergoes gamma decay, the nucleus formed is that of

The United States' effort to build an atomic bomb was named the ______________ Project.

Tell why each nuclide shown is unstable. Explain your reasoning in each case.

Radioactivity was discovered in

The diameter of the average nucleus is about ______________ m.

Natural uranium contains about what percentage of the fissionable isotope 235U?

Oak Ridge, Tennessee, was built to separate

When decays to , a(n) ______________ is emitted.

A positron is the _______________of an electron.

The half-life of is 6.0 h. What fraction of an original sample of this radionuclide would remain after 30.0 h have elapsed?

When an unstable Ir nucleus undergoes alpha decay, the nucleus formed is that of

An endoergic reaction

After three half-lives have elapsed, what fraction of the original amount of radionuclide remains?

The strong nuclear force is

Only four nuclides having an ______________ number of protons and an ______________ number of neutrons are stable.

Write the equation for the alpha decay of .

What is the symbol for the element whose atoms have 92 protons each?

Thermonuclear warheads, or hydrogen bombs, are powerful mainly because of the

A positron is symbolized by

Temperature and Heat

Waves and Sound

Optics and Wave Effects

Electricity and Magnetism

Atomic Physics

Nuclear Physics

The Chemical Elements

Chemical Bonding

Chemical Reactions

Place and Time

The Solar System

Moons and Small Solar System Bodies

The Universe

The Atmosphere

Atmospheric Effects

Structural Geology and Plate Tectonics

Minerals Rocks and Volcanoes

Surface Processes

Geologic Time

Filters

Natural uranium contains about what percentage of the fissionable isotope ²³⁵U?

The half-life of $The half-life of <sub> </sub> is 6.0 h. What fraction of an original sample of this radionuclide would remain after 30.0 h have elapsed?$ is 6.0 h. What fraction of an original sample of this radionuclide would remain after 30.0 h have elapsed?

Only four nuclides having an number of protons and an number of neutrons are stable.