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changes of matter

physical change...chemical change...chemical reactions

Chemical Change a change resulting in a new chemical substance
Physical Change When the form is changed but is still the same physical substance
Chemical property Is having the chance to make a chemical change
physical property Is having the chance to make a physical change
synthesis A+B--->AB A substance and B substance combined to make a new complex substance
decomposition AB--->A+B compound AB breaks down to form one A and one B
single replacment AB+C--->AC+B replacing one part of the pair
Double replacment AB+CD--->AD+CB Exchange of two parts of a compound
Atom A basic unit of a chemical element
Molecule A group of atoms bonded together
Conservation of mass Restating that mass can not be created or destroyed