Atoms, Elements, Molecules and compunds Flashcards
1
Q
Atoms
A
the smallest partile of an elemenet that can exist.
2
Q
Element
A
a pure chemal substance that cannot be physically split into a more simple substance .
3
Q
Moleculs
A
The smallest particle of a substance that can exist .It is composed of two or more atoms
4
Q
Compound
A
A substance made of atoms frome two or more elements
5
Q
proton
A
a particle of matter that has a positive electrcal chage and forms part of the
6
Q
Neutron
A
a particle of matter that has no elevtrical
7
Q
Electron
A
a particle of matter that has a negative electrical a negative
8
Q
Atoms Nuber
A
Namber of protons
9
Q
Mass
A
Number of protons plus neutrons Bottom number in the element box
10
Q
chemical symbol
A
A one or two letter representation of an element
