Paper1/2-SC3 Flashcards
1
Q
What is an isotope?
A
A different atom of the same element with the same atomic number but a different mass number.
2
Q
What is the equation for relative atomic mass?
A
Total mass of atoms/number of atoms.
3
Q
What is relative atomic mass and relative formula mass?
A
Mass number or numbers for formula.
4
Q
Which 2 elements were switched?
A
Iodine and tellurium.
5
Q
How are elements in the periodic table now ordered?
A
Atomic number instead of mass number.
6
Q
How were elements in the periodic table originally ordered?
A
In order of mass however this caused some elements to be grouped with others that had very different properties so a few were swapped round.
