C4 Flashcards
(5 cards)
1
Q
What is an isotope
A
Atoms of the same element that have the same number of protons but different number of neutrons
2
Q
What is the relative atomic mass (Ar) ?
A
The average mass of the isotopes of an element weighted to take into account the abundance of each isotope
3
Q
How do you find the relative formula mass of a compound
A
The sum of relative atomic masses in the compound
4
Q
What is a mole of a substance
A
One mole of any substance is its relative formula mass in grams
5
Q
How many atoms are in one mole of a substance
A
6.02 x 10^23. (Also called the Avogadro Constant)
