Atoms Compounds and molecules Flashcards
1
Q
Atom
A
smallest particle of a element that can exist.
2
Q
element
A
pure chemical substance. cannot be physically destroyed made up of one type of atom
3
Q
molecule
A
the smallest particle substance that can exist it is composed of two or more atoms
4
Q
compound
A
a substance made of atoms from two or more elementss
5
Q
proton
A
a particle of matter that has a eletric charge.
6
Q
neutron
A
particle with no eletric charge
7
Q
electron
A
particle of matter that has a negative clectrical charge and travels around the nucleus of an atom
8
Q
atomic number
A
number of protons
9
Q
mass number
A
number of protons plus neutrons
10
Q
chemical symbol
A
a letter representation of a particle
