Chem 1.3

Question 1

isotope abundance

Answer 1

various isotopes for each element existing in various percentages

Question 2

Mass spectrometers

Answer 2

used to determine the mass and abundance of isotopes

Question 3

some isotopes are radioactive, meaning that they spontaneously ____________ into more stable isotopes

Answer 3

disintegrate (decay)

Question 4

Energy or very small particles (NUCLEAR RADITION) is emitted from the _______ of a radioisotope as it decays

Answer 4

nucleus

Question 5

Alpha Particle

Answer 5

a positively charged particle with the same structure as the nucleus of a helium atom

Question 6

Beta Particle

Answer 6

A negatively charged particle (electron)

Question 7

Gamma ray

Answer 7

Form of high-energy electromagnetic radiation that is massless

Question 8

Order of strength (highest to lowest): Alpha, Gamma, Beta

Answer 8

Gamma (highest), Beta, Alpha (lowest)

Question 9

Atomic Mass

Answer 9

weighted average of the masses of all the naturally-occurring isotopes of an element