logging in or signing up Energy and states of matter rbartelt Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 872 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: August 24, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Energy and states of matter : Energy and states of matter The four states of matter : The four states of matter There are four states of matter. We will only investigate 3 in any detail: Solids Liquids Gases You should be familiar with this Physical changes : Physical changes A physical change is a change in which no new substances are formed and most physical changes are reversible. Examples: changes of shape, changes of states, passing electricity through a copper wire. I just took this from Wikipedia. It’s hyper-linked on my wikispace Phase changes : Phase changes There are 6 that I expect you to know. Page 348 has a good diagram. Endothermic vs. exothermic : Endothermic vs. exothermic Any phase change that requires energy to proceed is endothermic Examples are: boiling, melting, and sublimation. Take melting. What has more energy, a solid or a liquid? Therefore changing from a solid to a liquid requires energy. Hence, it’s endothermic. Endothermic vs. exothermic : Endothermic vs. exothermic Any phase change that releases energy as it proceeds is exothermic Examples are: freezing, condensation, and deposition. Take freezing. What has more energy, a solid or a liquid? Therefore changing from a liquid to a solid releases energy. Hence, it’s exothermic. Energy : Energy Understanding how energy flows from one substance to another is an important part of the study of chemistry. There are two units of energy that we will be studying in this course. The joule (more common) The calorie The joule : The joule One joule is defined as the amount of energy required to raise one gram of water one degree Celsius. Sample problem: If 400. J of energy are transmitted to a 50ml sample of water, what will the change in temperature be? Assume the density of water is 1 g/ml. Solution : Solution One J will raise 1 gram of water 1 degree. Set up the problem Write the givens Write what you’re looking for Come up with a plan Solve the problem Classifying matter : Classifying matter You will need to do this on your own. Look it up on the wikispace That’s it You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
Energy and states of matter rbartelt Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 872 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: August 24, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Energy and states of matter : Energy and states of matter The four states of matter : The four states of matter There are four states of matter. We will only investigate 3 in any detail: Solids Liquids Gases You should be familiar with this Physical changes : Physical changes A physical change is a change in which no new substances are formed and most physical changes are reversible. Examples: changes of shape, changes of states, passing electricity through a copper wire. I just took this from Wikipedia. It’s hyper-linked on my wikispace Phase changes : Phase changes There are 6 that I expect you to know. Page 348 has a good diagram. Endothermic vs. exothermic : Endothermic vs. exothermic Any phase change that requires energy to proceed is endothermic Examples are: boiling, melting, and sublimation. Take melting. What has more energy, a solid or a liquid? Therefore changing from a solid to a liquid requires energy. Hence, it’s endothermic. Endothermic vs. exothermic : Endothermic vs. exothermic Any phase change that releases energy as it proceeds is exothermic Examples are: freezing, condensation, and deposition. Take freezing. What has more energy, a solid or a liquid? Therefore changing from a liquid to a solid releases energy. Hence, it’s exothermic. Energy : Energy Understanding how energy flows from one substance to another is an important part of the study of chemistry. There are two units of energy that we will be studying in this course. The joule (more common) The calorie The joule : The joule One joule is defined as the amount of energy required to raise one gram of water one degree Celsius. Sample problem: If 400. J of energy are transmitted to a 50ml sample of water, what will the change in temperature be? Assume the density of water is 1 g/ml. Solution : Solution One J will raise 1 gram of water 1 degree. Set up the problem Write the givens Write what you’re looking for Come up with a plan Solve the problem Classifying matter : Classifying matter You will need to do this on your own. Look it up on the wikispace That’s it