| Definition/Meaning | Word/Phrase |
|---|
| positively charged particle that is the nucleus of the helium atom; emitted from natural or radioactive isotopes |
alpha particle
|
| radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms |
Am
,
americium
,
atomic number 95
|
| any of the chemically inert gaseous elements of the helium group in the periodic table |
argonon
,
inert gas
,
noble gas
|
| radioactive transuranic metallic element; produced by bombarding plutonium with helium nuclei |
atomic number 96
,
Cm
,
curium
|
| radioactive transuranic element; discovered by bombarding americium with helium |
atomic number 97
,
berkelium
,
Bk
|
| vacuum flask that holds liquid air or helium for scientific experiments |
Dewar
,
Dewar flask
|
| nuclear weapon that releases atomic energy by union of light (hydrogen) nuclei at high temperatures to form helium |
fusion bomb
,
H-bomb
,
hydrogen bomb
,
thermonuclear bomb
|
| mineral consisting of uranium oxide and trace amounts of radium and thorium and polonium and lead and helium; uraninite in massive form is called pitchblende which is the chief uranium ore |
pitchblende
,
uraninite
|
