2.1 small molecules and the chemistry of life Flashcards
atomic structure explains the property of matter
1
Q
Element
A
pure substance containing only one kind of atom
2
Q
Atomic Number
A
designated number of protons
3
Q
Mass number
A
total number of protons and neutrons
4
Q
isotopes
A
same element that have the same number of protons but different number of electrons
5
Q
Molecules
A
Atoms organized in stable conditions
6
Q
Valence Shell
A
outermost electron shell
