Elements/Atoms Flashcards
1
Q
Proton
A
Positively charged particle in the nucleus
2
Q
Neutron
A
Neutral particle in the nucleus
3
Q
Electron
A
Negatively charged particle outside of the nucleus
4
Q
Atomic number
A
The number of protons in an atom
5
Q
Electron cloud
A
Area around the nucleus
6
Q
Pure substance
A
Matter that always has the same exact composition
7
Q
Element
A
A pure substance in which all atoms are alike
8
Q
Atom
A
The smallest particle of an element that still retains the properties of an element
