Relative Atomic Mass Takes All Stable Isotopes into Account Flashcards
What is relative atomic mass (A) just a way of saying?
How heavy different atoms are compared with the mass of an atom of carbon-14
What is relative atomic mass?
The average mass of all the isotopes of an element
What does it have to allow?
For the relative atomic mass of each isotope and its relative abundance
What does relative abundance mean?
How much there is of each isotope compared to the total amount of the element in the world - ratio, fraction or percentage
How can you find the relative atomic mass of any element?
Using the periodic table
How do relative atomic masses usually come out?
Not usually as whole numbers of easy decimals, but often rounded to nearest 0.5
How do you use relative atomic mass?
Step by step -
- Multiply mass of each isotope by its relative abundance
- add them together
- divide by sum of relative abundances
Check example on page 17
Ok