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WorksheetsQuiz 1.4 Radioactivity
Total questions: 10
Worksheet time: 5mins
Which famous woman discovered two radioactive elements and won Nobel prizes for it?
Marie Curie
Helena Carter
Marie Becquerel
Rose Mendeleev
What is the only way one element can transmute?
By changing its number of protons.
By changing its number of electrons.
By changing its number of neutrons.
By releasing photons from its nucleus.
True or false. There is radioactivity in the air we breathe, the water we drink, and the food we eat.
No! Impossible!
Absolutely yes!
What type of radiation is the least penetrative and can be stopped by paper or skin?
Alpha radiation
Beta radiation
Gamma radiation
Delta radiation
The beta decay of Americum-241 produces ___.
Neptunium-237
Berkelium-245
Curium-241
Plutonium-241
The alpha decay of Iridium-192 makes ___.
Rhenium-188
Osmium-188
Gold-196
Platinum-193
Gamma radiation consists of the release of a(n) ___ from the nucleus.
proton
neutron
electron
photon
The time it takes for half an amount of radioactive material to decay is called ___.
half-life
half-time
radio life
microtime
Osmium-182 has a half-life of 21.5 hours. How many grams of a 10.0-gram sample have not yet decayed after exactly three half-lives?
5.00 grams
2.50 grams
1.25 grams
0.625 grams
Nuclear fission occurs when ___.
a big radioactive nucleus splits
two nuclei combine
an alpha particle is released
an atom gains too many electrons
