Radioactivity and Nuclear Processes; Nutrition/Food Applications of Chemistry Flashcards
Which of the following would have the least penetrating power into matter?
Select one:
a. alpha particles
b. beta particles
c. gamma rays
d. neutrons
a. alpha particles
Which of the following is made up of particles identical to electrons?
Select one:
a. alpha rays
b. beta rays
c. gamma rays
d. omega rays
b. beta rays
Which of the following types of radiation is composed of particles which carry a negative charge?
Select one:
a. alpha
b. beta
c. gamma
d. positron
b. beta
Tritium has a half-life of 12.5 years. If you had a sample of 8.00 grams of tritium today, how many grams of tritium would you have in 37.5 years?
Select one:
a. 8.00 g
b. 4.00 g
c. 2.00 g
d. 1.00 g
d. 1.00 g
Sodium-24 has a half-life of 15.0 hours. Suppose you had a sample containing 0.010 moles of NA-24. How many hours would be required to reduce your sample to 6.25 x 10-4 moles?
Select one:
a. 120
b. 60
c. 45
d. 30
b. 60
Which form of radiation would not be deflected by a magnetic field?
Select one:
a. protons
b. neutrons
c. beta particles
d. positrons
b. neutrons
In nuclear reactions, the principle change occurs
Select one:
a. in the molecule bonds.
b. in the electron arrangements of the atoms.
c. in the physical state of the matter.
d. in the nucleus of the atom.
d. in the nucleus of the atom.
The term “nuclear energy” is most closely associated with which one of the following processes?
Select one:
a. nuclear fusion
b. nuclear fission
c. cyclotron bombardment
d. radioactive decay
b. nuclear fission
What is the nuclear composition of 2812 Mg?
Select one:
a. 12 neutrons and 28 neutrons
b. 12 neutrons and 16 protons
c. 12 protons and 28 neutrons
d. 12 protons and 16 neutrons
d. 12 protons and 16 neutrons
Which measure of radiation is used to account for health differences of various types of radiation?
Select one:
a. curie
b. rem
c. gray
d. rad
b. rem
