1 / 10

Chapter 2, Sections 2 & 3, Pages 68-72

Chapter 2, Sections 2 & 3, Pages 68-72. Changes in Matter. Physical Change. A Physical Change is any change that alters the form or appearance of matter, but does not make any substance in the matter into a different substance. It just looks different!!!!! Figure 11, page 69. Chemical Change.

barnabas-sean
Download Presentation

Chapter 2, Sections 2 & 3, Pages 68-72

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. Chapter 2, Sections 2& 3, Pages 68-72 Changes in Matter

  2. Physical Change • A Physical Change is any change that alters the form or appearance of matter, but does not make any substance in the matter into a different substance. • It just looks different!!!!! • Figure 11, page 69.

  3. Chemical Change • A change in Matter that produces one or more new substances. • Four types of Chemical Change: • Combustion • Electrolysis • Oxidation • Tarnishing

  4. Types of Chemical Change • Combustion: Rapid combination of a fuel with Oxygen; produces heat, light, and new substances. • Example-Gas, oil, or coal burning in a furnace. • Electrolysis: Use of Electricity to break a compound into elements or simpler compounds. • Example-Breaking down water into Hydrogen and Oxygen

  5. Types of Chemical Change • Oxidation: The slow combination of a substance with Oxygen. • Example-Rusting of an Iron fence. • Tarnishing: The slow combination of a bright metal with Sulfur or another substance, producing a dark coating on the metal. • Example-Tarnishing of Brass.

  6. Law of Conservation of Matter • The fact that matter is not created or destroyed in any Chemical or Physical change. • Figures 14 & 15, page 71.

  7. Types Of Energy • Thermal Energy: The total energy of all of the particles in an object (fig.’s 16 &17, pg. 74). • Temperature is the measure of the average energy of random motion of particles of matter. • You experience thermal energy when you describe matter, such as the air in a room feeling hot and cold.

  8. Chemical Energy: The energy stored in the chemical bonds between atoms. • Figure 18, page 75. • Electromagnetic Energy: A form of energy that travels through space as waves. • Visible light is one example of electromagnetic energy. • Figure 19, pg. 76.

  9. Types of Energy • Electrical Energy: The energy of electrically charged particles moving from one place to another. • Fig. 19, pg. 76.

  10. Transforming Energy • During a chemical change, chemical energy may be changed to other forms of energy. Other forms of energy may also be changed to chemical energy. • Fig. 20, pg. 77.

More Related