MN Physics Midterm

Question 1

T/F

The decay constant of a particular radionuclide increases as the amount of radionuclide decreases

Answer 1

False

Question 2

T/F

A radionuclide is an atom with an unstable nucleus

Answer 2

True

Question 3

T/F
The following are accepted nuclear forces:
Gravitational, elastic, strong, weak

Answer 3

False; Elastic should be E-M

Question 4

T/F

Einstein was the first to describe an atom with orbital electrons

Answer 4

False

Question 5

T/F

The energy released during beta-minus decay is shared between the beta particle and an antineutrino

Answer 5

True

Question 6

T/F

An alpha particle is a hydrogen nucleus

Answer 6

False

Question 7

T/F

A positron is a from of antimatter

Answer 7

True

Question 8

T/F

The most powerful force acting within the nucleus is the gravitational force

Answer 8

False

Question 9

T/F

Tc-99m is an isotope of Tc-99.

Answer 9

False; isotopes have the same Z number

Question 10

T/F

The standard model of the atom is made up of quarks, leptons, and force carrier particles

Answer 10

True

Question 11

T/F

After positron decay, the positron will combine with a neutron which will be converted into a proton

Answer 11

False

Question 12

Isotopes have:
A) the same A number
B) the same Z number
C) the same neutron number
D) All
E) A&B
F) A&C

Answer 12

B) the same Z number

Question 13

Isotones have:
A) same A, different Z, different N
B) different A, same Z, different N
C) different A, different Z, same N
D) none

Answer 13

C) different A, different Z, same N

Question 14

Isobars have:
A) same A, different Z, same N
B) different A, same Z, different N
C) same A, different Z, different N
D) different A, different Z, same N

Answer 14

C) same A, different Z, different N

Question 15

Isomers have:
A) the same A number
B) the same Z number
C) the same neutron number
D) All of the above

Answer 15

D) All of the above

Question 16

Which are the considered to be force particles?
A) quarks
B) photons
C) Gluons
D) a and b
E) b and c
F) a, b, and c

Answer 16

E) b and c

Question 17

In an endothermic reaction:
A) the Q value is less than 0, energy is required and rest mass increases
B) the Q value is greater than 0, energy is released, and the rest mass decreases
C) classic example is pair production with 1.02 MeV energy requirement
D) classic example is fission
E) both a and c
F) both b and d

Answer 17

E) both a and c