science Flashcards
1
Q
element
A
A pure substance that cannot be broken down into any
simpler substance
2
Q
compound
A
Any substance that is formed by the chemical cobinatio
n
3
Q
Atom
A
the smallest unit of an element
4
Q
Proton
A
A particle in the nucleus
5
Q
Neutron
A
A particle in the nucleus
6
Q
Electron
A
A particle in the space outside
7
Q
Nucleus
A
A dense structure inside
8
Q
Molecule
A
A particle that contains more than one atom
