LT#3: Isotopes

Question 1

Define Isotopes

Answer 1

<p>Atoms of the same element that have the same # of protons, but different # of neutrons</p>

Question 2

Define Isotopic Abundance

Answer 2

The relative amount of a given isotope that exists in nature

Question 3

Example of Isotopes are…

Answer 3

C-12 and C-13

Question 4

Equation used to find the Weighted Ave Mass of an atom

Answer 4

Ave = (Abundance x mass) + (Abundance x mass) + …(Must sub in Abundances as decimals NOT percent)

Question 5

Define Radioisotope

Answer 5

An isotope with an unstable nucleus which causes the atom to decay releasing energy. This is caused by the forces between protons and neutrons not being properly balanced.

Question 6

Example of Radioisotopes are…

Answer 6

C-14 and U-238