Unit 4 – Chemistry Flashcard

Mass defect represents the binding energy between

A. protons and electrons
B. protons and alpha particles
C. protons and neutrons in the nucleus
D. electrons and neutrons
E. atoms

The mass defect of a nuclide also represents

A. atomic radius minus the atomic mass
B. mass number
C. atomic mass
D. the difference in mass between the atom and the sum of its constituent particles
E. energy and chemical reaction

Albert Einstein’s Theory of Relativity says that one piece of that theory is an equation that demonstrates the relationship between mass and energy. Which of the following is the correct equation for this relationship?

A. E=m2c
B. E=m2c2
C. E=mc
D. E2=mc
E. E=mc2

Which of the following is not a nuclear reaction?

A. carbon-14 decaying into nitrogen-14 and a beta particle
B. hydrochloric acid combining with sodium hydroxide to form NaCl and water
C. curium-246 combing with carbon-12 to form nobelium-254 and four neutrons
D.hydrogen peroxide breaking down to form hydrogen and oxygen

At present, fission reactions

A. are capable of being used in nuclear power plants and do not produce radioactive waste
B. cannot be used to produce energy in reactors
C. produce the energy in nuclear power plants
D. produce the energy in hydrogen bombs
E. produce the energy sun

George was researching the different types of radioactive decay. He noticed that only one type of decay always produce a particle but does not change the mass. This type of radioactive decay is

A. fission
B. fusion
C. gamma decay
D. beta decay
E. alpha decay

What type of material would be used to protect against radiation with greatest penetration power?

A. lead
B. paper
C. plastic
D. aluminum
E. petroleum

Radioactive tracers are also called radioactive labels and are a substances containing a radioisotope that is used to

A. calculate the half-life of a nuclide
B. determine the speed of the nuclear reaction
C. measure the heat of nuclear reactions
D. estimate the age of a material
E. follow the movement of substances in a system

Which one of the following statements is true regarding the mass and magnitude of charge of alpha particles and beta particles?

A. alpha particles are more highly charged and have greater mass than beta particles
B. beta particles are more highly charged and have greater mass than alpha particles
C. alpha particles are more highly charged than beta particles, but beta particles have greater mass
D. beta particles are more highly charged than alpha particles, but alpha particles have greater mass
E. alpha particles are more highly charged than beta particles, but the masses of the two types are the same

Neutral nickel-59 has

A. 59 electrons
B. 32 neutrons
C. 28 electrons
D. 60 electrons
E. 28 neutrons


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