1: which of these is a chemical property of a substancereactivitycolor boiling pointmelting point2: what does the release or absorption of energy indicate physical change chemical changephysical and chemical changesneither physical nor chemical changes3: which of these is an example of a physical changebreaking bread baking bread digesting breadtoasting bread 4: which of these is an example of a chemical change cutting breadspreading peanut butterdigesting a sandwich stirring jelly5: which of these is an example of a chemical change fireworks exploding grinding powdermelting cheese ironing a shirt