SCIENCE 1120 CU 3 PART 1 START

emission of particles and radiation caused by breakdown of unstable nuclei of certain elements

• beta decay
• isotope
• nuclear radioactivity
• fusion reaction

cosmic particle

• alpha particle
• transmutation
• gamma ray
• cosmic particle

process by which radioactive elements are transformed into more stable atoms

• nuclear radioactivity
• radioactive decay
• fusion reaction
• chain reaction

a different form of an element with some atomic number but different atomic mass number

• half-life
• isotope
• transmutation
• fusion reaction

alpha article

• mostly hydrogen nuclei
• a different form of an element with some atomic number but different atomic mass number
• emission of particles and radiation caused by breakdown of unstable nuclei of certain elements
• time required for one-half the mass of any element to decay into simpler atoms

when a nucleus of heavy mass is split into two nuclei of smaller mass during a nuclear reaction is called a nuclear fission.

• True
• False

chain reaction is also known as continuous fission reaction

• True
• False

nuclear reactor

• transformation of one element into a different element
• electromagnetic waves emitted from nucleus of radioactive element
• device that allows nuclear fission to proceed at a controlled rate
• combines two lightweight, stable nuclei into one more massive nucleus

fusion reaction

• nuclear reaction in which a nucleus of heavy mass is split into two nuclei of smaller mass
• time required for one-half the mass of any element to decay into simpler atoms
• device that allows nuclear fission to proceed at a controlled rate
• combines two lightweight, stable nuclei into one more massive nucleus

the transformation of one element into the same element is known as transmutation

• True
• False