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21 Cards in this Set
- Front
- Back
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Which of the following are electrically charged? a. proton b. neutron c. electron d. both a and c |
d. both a and c
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Which of these atoms have the least mass? a. hydrogen b. iron c. lead d. uranium |
a. hydrogen |
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Different isotope of an element has different number of a. protons b. neutrons c. photons d. neutrinos |
b. neutrons |
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When an electron falls from a level of higher energy to a level of lower energy a. thedifference in energy is absorbed as light b. the energyof the electron stays the same c. thedifference in energy is emitted as light d. it falls outof the atom |
c. the difference in energy is emitted as light |
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In the fission of uranium, a chain reaction is caused by a. the enormousenergy release b. the kineticenergy of the decay product c. ejectedneutrons d. theconversion of mass to energy |
c. ejected neutrons |
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A quantum or photon is a. a unit ofmomentum b. a proton c. a discreteor specific amount d. an airlinein Australia |
c. a discrete or specific amount |
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If two protons are added to an carbon nucleus, the result is a. nitrogen b. oxygen c. beryllium d. helium |
b. oxygen |
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The number of neutrons in the nucleus of the lead isotope is a. 82 b. 288 c. 124 d. about 2-3 |
c. 124 |
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Which radiation has no electric charge associated with it? a. a (alpha) b. b (beta) c. g (gamma) d. electron |
c. gamma |
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Which of these phenomena specifically demonstrate the existence oflight quanta, or proton? a. refraction b. dispersion c. interference d. thephotoelectric effect |
d. the photoelectric effect |
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The age of the Dead Sea Scrolls was found by carbon dating. Couldthis technique have worked if they were carved in stone tablets? Explain. |
no, stones do not contain carbon |
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Strontium-90 is a product of nuclear fission. It has a half-life of 28 years. How much Strontium-90will be left from 32 tons of Strontium-90residue in 140 years? |
answer= 1T 32t--16T--8T--4T--2T--1T 28 28 28 28 28yrs 28 years X 5 = 140 years |
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Which one has more energy? Photon of red light or photon of blue light. |
blue light |
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what does the following element description actually mean iron-57 a. an iron with an atomic number of 57 b. an iron with a mass number of 57 c. an iron with 57 neutrons d. an iron with 57 protons e. 57 iron atoms |
b. an iron with a mass number of 57 |
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which element has the atomic number 9 a. Na b. Be c. F d. Ne e. B |
c. F |
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which of the following elements is the most stable from a nuclear point of view a. argon b. iron c. hydrogen d. uranium e. all equally stable |
b. iron *remember the graph* |
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if a material has a half life of 24 hours, how long do you have to wait until the amount of radioisotope is 1/4 its original amount? a. 24 b. 12 c. 72 d. 48 |
d. 48 hours |
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what was Niels Bohr's explanation for the observation of atomic spectra? a. any photon could excite an electron b. electrons could not move in an atom c. nucleons could be excited by different electron energies d. only certain photons with the correct energy could excite the quanta in the nucleus e. electrons could only move in discrete energy steps within an atom |
e. electrons could only move in discrete energy steps within an atom |
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which of the following statements does not describe a proton a. it has a positive charge equivalent but opposite of an electrons b. it is a nucleon c. it is much more massive than an electron d. it orbits around the nucleus of an atom e. it is attracted to negatively charged electrical plates |
d. it orbits around the nucleus of an atom |
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which are older, the atoms in the body of an elderly person or those in the body of a baby? a. an elderly person b. depends on diet c. they are the same age, which is appreciable older than the solar system d. a baby |
c. they are the same age, which is appreciably older than the solar system. |
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if an element has 9 protons and 10 neutrons and 9 electrons, which expression correctly identifies the element a. 19
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