Changes in Matter Physical Change Change of State

Changes in Matter

Physical Change - Change of State � A change that occurs in the appearance of matter, but no new substance is formed. � Normally, reversible. � Change shape or form � Change the speed or space between molecules Example: Boiling water

Evaporation ( heat added) GAS Deposition (heat removed) Condensation (heat removed) LIQUID Sublimation Freezing or Solidification (heat removed) SOLID Melting ( heat added)

Types of physical change: ØMelting ØFreezing ØBoiling ØCondensing ØDissolving ØMixing substance together

Chemical Change �A change in matter that occurs when substances combine or separate to form other substances. �Normally, irreversible.

Pocket activity time. Decide – Chemical or Physical change?

Chemical and Physical Change �Chewing C and P - Apple �Food Cutting P �-Digesting C - �food Melting P �Fireworks - C �Tearing P �Paper Frying -eggs - C �Popping P �popcorn Popsicle - P �melting Boiling water- P

C C �Roasting P �Marshmallows Bending Wire - C �Food decaying C �Baking a cake C �Rotting banana P �-Melting candle C �Nail rusting C �Burning match P �Shattered glass C �-A reaction gets hotter or - / fizzing �cooler Bubbles C �Leaves changing color in the C �fall Dissolving sugar in P water�Making toast -

LAB 5 A P 176