Slideshow Transcript

1. Slide 2: Do you remember what Physical Properties are??? • Color • State of Matter • Shape • Length • Mass • Magnetism
2. Slide 3: Chemical Properties determine how a substance interacts with other substances Some examples are: *flammability *reactivity to an acid *reactivity to water
3. Slide 4: After a PHYSICAL CHANGE, the appearance of the substance may be different but it is still the same substance EXAMPLES: Chopping wood Cutting a Bending a steak metal Cracking an Tearing paper egg
4. Slide 5: After a CHEMICAL CHANGE, a new substance is produced with NEW PROPERTIES. These properties are different from the original substance! EXAMPLES: Digesting a Burning steak wood Rusting of Frying an metal egg
5. Slide 6: Here are some signs that a CHEMICAL CHANGE took place:  New color  New odor or smell  Gas bubbles or smoke  An increase or decrease in temperature
6. Slide 7: Physical or Chemical??? Use the A-F cards to separate the Physical Changes from the Chemical Changes! A. You cut a sheet D. Rubbing alcohol of aluminum foil in evaporates from your half hand B. Your friend E. Hydrogen peroxide melts some butter bubbles when you put for her popcorn it on a cut on your leg C. Your Mom F. You leave the milk lights a candle in a on the counter all night dark room and discover it has soured in the morning