Regents Chemistry Unit 4: Question Preview (ID: 19373)


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Which type of reaction releases more energy?
a) Nuclear Fusion
b) Light a match
c) Burning of fossil fuels
d) Nuclear Fission

Which radioactive isotope is used in the dating of biological remains, such as in the field of archaeology?
a) C-14
b) I-131
c) Co-60
d) U-235

Which radioactive isotope is used as a source of radiation to treat cancer?
a) C-14
b) Co-60
c) I-131
d) U-235

Which radioactive isotope is used to detect and cure hyperthyroidism?
a) C-14
b) Co-60
c) I-131
d) U-235

Which term is best described as the period of time that must go by for half of the nuclei in the sample to undergo decay?
a) Half-life
b) Decay time
c) Radioactive sensitivity
d) Periodicity

Which of the following is NOT an acceptable method of testing for radioactivity?
a) Use it to expose protected photographic film
b) Bring it near some phosphorescent materials
c) Test it with a Geiger counter
d) Expose yourself to it and see if you have health problems

Which radioactive decay particle has the same mass and charge as a helium atom?
a) Beta
b) Alpha
c) Positron
d) Gamma

What is the most powerful and harmful form of radioactive decay?
a) Alpha
b) Beta
c) Positron
d) Gamma

Atoms of what atomic number tend to be more radioactive than atoms below it?
a) 12
b) 24
c) 48
d) 83

Isotopes of an element have the same number of protons, but a different number of
a) Isotrons
b) Positrons
c) Neutrons
d) Electrons

Nuclear charge is the same as the number of
a) Neutrons
b) Nucleons
c) Klingons
d) Protons

The atomic mass number of an atom is
a) Protons plus neutrons
b) Electrons plus protons
c) Neutrons minus protons
d) Electrons times electrons

What is the mass of a neutron?
a) -1
b) 1
c) 0
d) 2

What is the mass of an electron?
a) 1/1836th of a proton
b) 1
c) 2
d) 3

What is the mass of a proton?
a) 1
b) 0
c) -1
d) 2

What is the charge of an electron?
a) Positive
b) Neutral
c) Negative
d) Infinite

What is the charge of a proton?
a) Positive
b) Negative
c) Neutral
d) Infinite

Which type of reaction involves fusing together two small atoms to release tremendous amount of energy?
a) Lighting a match
b) Nuclear Fission
c) Nuclear Fusion
d) Burning of fossil fuels

Which type of reaction involves taking a large nuclei and splitting into smaller ones, destroying a tiny bit of mass and releasing vast amounts of energy?
a) Nuclear Fusion
b) Lighting a match
c) Burning of fossil fuels
d) Nuclear Fission

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