Chapter 4 Vocabulary Flashcards
1
Q
Electrons
A
Negatively charged subatomic particles
2
Q
Protons
A
Positively charged subatomic particles
3
Q
Neutrons
A
A neutrally charged subatomic particle
4
Q
Atomic Number
A
The amount of protons in the nucleus of the atom
5
Q
Mass Number
A
The total number of protons and neutrons in the nucleus of an atom
6
Q
Isotope
A
Atoms that have the same number of protons and a different number of neutrons
7
Q
AMU (atomic mass unit)
A
Defined as 1/12 the mass of a carbon atom
8
Q
Atomic Mass
A
A weighted average mass of the atoms in a naturally occurring sample of the element
9
Q
Atom
A
The smallest particle of an element that retains its identity in a chemical reaction
