Physical and Chemical Changes

Physical Changes in Matter Physical change: a change in size, shape, or state of matter. It does not form a different type of matter.

Chemical Changes in Matter Chemical change: a change in matter that forms a different type of matter with different properties. A new substance is created that wasn’t there before.

Physical vs. Chemical Changes Type of change Is new matter created? Can it be reversed? Examples Physical Change Chemical

Evidence of a Chemical Change Color change Formation of a gas look for bubbling or fizzing Formation of a solid Production of heat or light this is the release of energy

Exit Ticket Fold a sheet of paper in half twice, to make 4 boxes. In each box, write whether each change (see picture to the right) is physical or chemical Explain WHY, using evidence from this PowerPoint or your textbook. 1 Ice melting 2 A firework exploding 3 A marshmallow burning 4 A paperclip being bent