Molecules & Ions
Ions
Negative Ions
Gain electrons
Positive Ions
Loss electrons
Form from ionic bonding between metals and non-metal
Transfer of electrons
Matter
Pure compounds
Elements
Made up of atoms of the same type
Compounds
Produced by chemical reaction
Constant constituent
Different from those of its constituent elements
Made up of atoms of different type
Mixtures
Homogenous
Example: Ink
Hetrogenous
Example: Salad
Separate by physical method
Molecules
Form from covalent bonds between non-metals
Sharing of electrons
Atom
Electrically neutral
Contain 3 basic particles
Negative electrons
Neutral neutrons
Positive protons
smallest particles of any element
Made up matter
Isotopes
Atom of the same type
Different number of neutrons
Same number of protons