Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
7 Cards in this Set
- Front
- Back
|
Protons
|
the positively charged particles of the nucleus; the number of protons in a nucleus is the atomic number that determines the identity of an element.
|
|
|
Atomic mass unit
|
The SI unit used to express the masses of particles in atoms
|
|
|
Neutron
|
The particles of the nucleus that have no charge
|
|
|
Atomic number
|
the number of protons in the nucleus of an atom
|
|
|
Isotopes
|
Atoms that have the same number of protons but have different numbers of neutrons
|
|
|
Mass number
|
The sum of the protons and neutrons in an atom
|
|
|
Atomic mass
|
the weighted average of the masses of all the naturally occuring isotopes of an element
|
