Atoms Flashcards
How is atoms consisted of?
Single nucleus with positive charge surrounded by a cloud of negatively charged electrons
Consists of an aggregation of atoms held together by valence forces
Molecule
A group of two or more atoms that form the smallest identifiable unit
Molecules
Two atoms that are chemically bonded
Diatomic Molecules
Two identical atoms chemically bonded (O2)
Homonuclear
Two different atoms chemically bonded (CO)
Heteronuclear
Molecules containing more than two atoms (CO2)
Polyatomic molecules
Atoms of different chemicals can combine
Molecular bonding
Substance formed by chemical union
Chemical bonding
Identical atoms bonding together with identical proportion and differ only in arrangements
Isomers
Sharing of an electron pair between two atoms
Covalent bonding
Atoms that have net electrical charge
Ions
Fewer electrons than protons have a net positive charge
Cation
More electrons than protons have a net negative charge
Anions
Cations and anions in a ratio that results no net electrical charge
Ionic compounds