chemistry Flashcards
1
Q
What is the charge of a neutron, electron and proton?
A
Neutron is neutral or 0, electron is negative, proton is positive
2
Q
Describe the composition of the nucleus and outer region
A
Protons and neutrons are part of the nucleus of an atom and an electron cloud surrounds it.
3
Q
Define atomic number
A
the number of protons in the nucleus
4
Q
Define atomic mass
A
Mass Number = (the number of protons + the number of neutrons in the nucleus)
5
Q
How does the shorthand notation work?
A
Mass number is on top of atomic number
6
Q
What is an isotope?
A
An isotope is an atom that has more or fewer neutrons in its nucleus
7
Q
What is an acid?
A
Define an acid as a substance that produces H+ ions in solution
