1.2 Flashcards
1
Q
Element
A
a pure substance that cannot be broken down into any simpler substances
2
Q
Compound
A
any substance that is formed by the chemical combination of two or more elements
3
Q
Atom
A
the smallest unit of an element
4
Q
Proton
A
a partials in the nucleus of an atom that carries one unit of positive electric charge
5
Q
Neutron
A
a particle in the nucleus of an atom that has no net electric charge
6
Q
Electron
A
a particle in the space outside the nucleus of an atom that carries one unit of negative electric charge
7
Q
Nucleus
A
a dense structure inside the cell
8
Q
Molecule
A
a particle that contains more then one atom joined together
