Atomic Structure Flashcards
0
Q
What is the relative mass of neutrons
A
1
1
Q
What is the relative mass of protons
A
1
2
Q
What is the relative mass of electrons
A
Very small
3
Q
What Is the mass number
A
The total number of protons and neutrons in an atom
4
Q
What is an isotope
A
When atoms of the same element have different numbers of neutrons
5
Q
What is the relative formula mass of a compound?
A
The sum of the relative atomic masses of the atoms in the numbers shown in the formula
6
Q
The relative formula mass of a substance in grams is known as ?
A
One mole of that substance
