Atomic chemistry Flashcards
1
Q
What is the mass number
A
The sum of protons and neutrons
2
Q
What is an isotope
A
Atoms of the same element with different numbers of neutrons
3
Q
What are noble gases
A
The elements in group 0
4
Q
What are halogens
A
Group 7 elements
5
Q
What is an ionic compound held together by
A
strong electrostatic forces of attraction between oppositely charged ions
6
Q
What is the law of conservation of mass states
A
That no atoms are made or lost during a chemical reaction
7
Q
How do you get the mol number
A
Its the same as the relative formula mass
8
Q
A
