<p>Physical and Chemical Properties and Changes Guided Notes</p><p>1. Matter is anything that takes up SPACE and has MASS.</p><p>2. You can observe matter easily with your SENSES.</p><p>3. The only thing that wouldn’t be matter would be ENERGY, because it doesn’t have </p><p>MASS or VOLUME.</p><p>4. A physical property is a property that can be EASILY OBSERVED without changing the </p><p>IDENTITY of the substance.</p><p>5. Examples of physical properties:</p><p>A. SOLUBILITY of a substance is its ability to DISSOLVE.</p><p>B. CONDUCTIVITY is a material’s ability to ALLOW HEAT OR ELECTRICITY TO FLOW.</p><p>C. MALLEABILITY of a substance is its ability to be HAMMERED INTO A THIN SHEET.</p><p>D. MELTING and FREEZING points are the TEMPERATURES at </p><p> which a SOLID becomes a LIQUID and a LIQUID becomes a SOLID.</p><p>E. DENSITY of a substance is a measure of how CLOSE together its PARTICLES are.</p><p>6. A PHYSICAL change is a change in the APPEARANCE, without changing the </p><p>IDENTITY of the material. It can be REVERSIBLE or IRREVERSIBLE.</p><p>7. It is a physical change if:</p><p> IT CHANGES SHAPE OR SIZE</p><p> IT DISSOLVES</p><p> Or THE SUBSTANCE CHANGES PHASE</p><p>8. A chemical property is any ability to produce a CHANGE in the IDENTITY of matter.</p><p>9. Examples of chemical properties:</p><p> FLAMMABILITY: MATERIAL’S ABILITY TO BURN IN THE PRESENCE OF OXYGEN</p><p> REACTIVITY: HOW READILY A SUBSTANCE COMBINES WITH OTHER SUBSTANCES</p><p> CORROSIVE: EATING AWAY, SUCH AS A METAL BY ACID [Type text] [Type text] [Type text] 10. CHEMICAL changes occur when a substance REACTS and forms </p><p>ONE OR MORE NEW SUBSTANCES.</p><p>11. You know a chemical change has occurred when there is:</p><p> A CHANGE IN COLOR OR ODOR</p><p> PRODUCTION OF A GAS</p><p> FORMATION OF A PRECIPITATE</p><p> ABSORB OR RELEASE ENERGY (GETS HOT OR COLD OR LIGHT IS GIVEN OFF)</p><p>12. Examples of chemical changes:</p><p> BURNING OR COMBUSTION: COLOR CHANGE, ODOR CHANGE, PRODUCES A GAS, GETS HOT</p><p> CORRODING: COLOR CHANGE</p><p> RUSTING: COLOR CHANGE</p><p> MOLDING: COLOR CHANGE, ODOR CHANGE</p><p> DECAYING: COLOR CHANGE, ODOR CHANGE</p><p> DECAYING: COLOR CHANGE, ODOR CHANGE, PRODUCES A GAS, RELEASES ENERGY</p><p>13. Identify each example on the slides as a physical or chemical change and explain how you know: A. PHYSICAL: BECAUSE THE RIBBON IS STILL A RIBBON; IT DIDN’T CHANGE IDENTITY</p><p>B. CHEMICAL: BECAUSE IT CHANGES WOOD TO ASH; COLOR CHANGE, SMOKE PRODUCED, GETS HOT</p><p>C. PHYSICAL: BECAUSE SNOW IS MADE OF WATER EVEN AFER IT MELTS; DIDN’T CHANGE IDENTITY</p><p>D. PHYSICAL: BECAUSE ICE IS MADE OF WATER EVEN AFTER IT MELTS; DIDN’T CHANGE IDENTITY</p><p>E. CHEMICAL: IT IS BUBBLING, PRODUCING A GAS</p><p>F. PHYSICAL: IT’S STILL A WALL, JUST PAINTING IT DOESN’T CHANGE ITS IDENTITY</p>