1 / 8

Signs of a Chemical Change

Signs of a Chemical Change. Signs that a New Substance has Formed. Deanna Soukup. New Color. Example: Yellow iodine and w hite starch react to form a new purple s ubstance. New Odor. Example: Milk spoils, and the new substance smells bad. New Foaming or Fizzing Gas.

gilead
Download Presentation

Signs of a Chemical Change

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Signs of a Chemical Change Signs that a New Substance has Formed Deanna Soukup

  2. New Color Example: Yellow iodine and white starch react to form a new purple substance

  3. New Odor Example: Milk spoils, and the new substance smells bad.

  4. New Foaming or Fizzing Gas Example: Baking soda and vinegar react to form a new foaming gas, carbon dioxide.

  5. Formation of New Precipitate Example: Lead Nitrate solution and Potassium Iodide solution react to form a new solid.

  6. Release of Energy Example: Fireworks exploding release light, heat, and kinetic (sound) energy.

  7. Credits: • http://www.visualphotos.com/image/1x7465698/iodine_used_to_detect_the_presence_of_starch • http://blog.gsmiweb.com/2011/04/new-packaging-materials-keep-you-from-crying-over-spoiled-milk/ • http://www.youtube.com/watch?v=zqhLa0Ei4B4 • http://www.sciencephoto.com/media/4011/enlarge • http://www.publicdomainpictures.net/view-image.php?image=403

  8. Question and Assignment: • What other real-life examples can you think of for chemical reactions that display each of the 5 signs of chemical reactions? • Create your own product that demonstrates your knowledge of all the signs of chemical change and examples of a reaction for each sign.

More Related