8th Grade-Ch. 2 Sec. 3 Batteries
-
Upload
all-saints-science -
Category
Education
-
view
1.108 -
download
3
description
Transcript of 8th Grade-Ch. 2 Sec. 3 Batteries
![Page 1: 8th Grade-Ch. 2 Sec. 3 Batteries](https://reader033.fdocuments.net/reader033/viewer/2022061219/54841b27b47959e70c8b4b20/html5/thumbnails/1.jpg)
Ch. 2 Sec. 3 Batteries
![Page 2: 8th Grade-Ch. 2 Sec. 3 Batteries](https://reader033.fdocuments.net/reader033/viewer/2022061219/54841b27b47959e70c8b4b20/html5/thumbnails/2.jpg)
Luigi Galvani
• made frog leg move
• thought it was b/c of “animal electricity”
![Page 3: 8th Grade-Ch. 2 Sec. 3 Batteries](https://reader033.fdocuments.net/reader033/viewer/2022061219/54841b27b47959e70c8b4b20/html5/thumbnails/3.jpg)
Luigi Galvani
Though Luigi Galvani
erroneously concluded that
the frog's nervous system
generated an electrical charge,
his work stimulated much research into the electrical nature of the nervous
impulse.
![Page 4: 8th Grade-Ch. 2 Sec. 3 Batteries](https://reader033.fdocuments.net/reader033/viewer/2022061219/54841b27b47959e70c8b4b20/html5/thumbnails/4.jpg)
Alessandro Volta•Italian scientist who built 1st electric battery out of silver, zinc & paper soaked in salt H20
![Page 5: 8th Grade-Ch. 2 Sec. 3 Batteries](https://reader033.fdocuments.net/reader033/viewer/2022061219/54841b27b47959e70c8b4b20/html5/thumbnails/5.jpg)
Alessandro Volta• Said that Galvani made frog leg move b/c of chemical reaction= process in which substances change into new substances w/ diff. properties
![Page 6: 8th Grade-Ch. 2 Sec. 3 Batteries](https://reader033.fdocuments.net/reader033/viewer/2022061219/54841b27b47959e70c8b4b20/html5/thumbnails/6.jpg)
electrochemical cell
• Device that converts chemical energy electrical energy
• Made of 2 different metals (electrodes)–Partially immersed in an
electrolyte= device that conducts electric current
![Page 7: 8th Grade-Ch. 2 Sec. 3 Batteries](https://reader033.fdocuments.net/reader033/viewer/2022061219/54841b27b47959e70c8b4b20/html5/thumbnails/7.jpg)
![Page 8: 8th Grade-Ch. 2 Sec. 3 Batteries](https://reader033.fdocuments.net/reader033/viewer/2022061219/54841b27b47959e70c8b4b20/html5/thumbnails/8.jpg)
![Page 9: 8th Grade-Ch. 2 Sec. 3 Batteries](https://reader033.fdocuments.net/reader033/viewer/2022061219/54841b27b47959e70c8b4b20/html5/thumbnails/9.jpg)
terminal• Part of an electrode above
surface of the electrolyte
![Page 10: 8th Grade-Ch. 2 Sec. 3 Batteries](https://reader033.fdocuments.net/reader033/viewer/2022061219/54841b27b47959e70c8b4b20/html5/thumbnails/10.jpg)
battery•combination of 2 or more electrochemical cells in a series
•store chemical energy
![Page 11: 8th Grade-Ch. 2 Sec. 3 Batteries](https://reader033.fdocuments.net/reader033/viewer/2022061219/54841b27b47959e70c8b4b20/html5/thumbnails/11.jpg)
![Page 12: 8th Grade-Ch. 2 Sec. 3 Batteries](https://reader033.fdocuments.net/reader033/viewer/2022061219/54841b27b47959e70c8b4b20/html5/thumbnails/12.jpg)
2 kinds of electrochemical
cells:
![Page 13: 8th Grade-Ch. 2 Sec. 3 Batteries](https://reader033.fdocuments.net/reader033/viewer/2022061219/54841b27b47959e70c8b4b20/html5/thumbnails/13.jpg)
1. wet cell•electrolyte = liquid
![Page 14: 8th Grade-Ch. 2 Sec. 3 Batteries](https://reader033.fdocuments.net/reader033/viewer/2022061219/54841b27b47959e70c8b4b20/html5/thumbnails/14.jpg)
2. dry cell (alkaline)
•electrolyte = paste
![Page 15: 8th Grade-Ch. 2 Sec. 3 Batteries](https://reader033.fdocuments.net/reader033/viewer/2022061219/54841b27b47959e70c8b4b20/html5/thumbnails/15.jpg)
Object Voltage 1 D battery
2 D batteries3 D batteries
Activity-Find the voltage