Understanding of electrochemistry

In summary, the person was wondering why their battery got hot when they had a battery, some change, and their keys in their pocket. They tried to recreate the heat by connecting a penny and their keys to the battery, but it didn't work. They then tried a paperclip and it worked, causing them to question if it's possible to start a fire with a battery and a paperclip. They later found a video explaining how to start a fire with a battery and a staple, and realized that it was because the tape on the - end of the battery separates the anode and cathode.
  • #1
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just wondering. i remember once i had a battery, some change, and my keys in my pocket and eventually i reallized the battery got really really hot. just for the heck of it i tried to get that to happen again and it didnt work. can someone explain why this happenned before?

i tried putting a penny on the - end and connected it to the + end with my keys. and i tried it the other way around too but didnt work. i guess my keys are made of zinc and copper.

edit: or would this just take a long time? cus i don't feel like sitting there for 2 hours. i was just trying to further my understanding of electrochemistry
 
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  • #2
Short circuit is a key word here.
 
  • #3
If you make a connected path of metal between the + and - terminals, that's a short circuit and the battery will heat up noticeably. Probably within a half a minute. If that does not happen, either the connection was broken somewhere or possibly the battery is already dead.
 
  • #4
ok i tried it again with a paperclip and it worked in like a few seconds. is it possible to create a fire with a battery and paperclip?
 
  • #5

1. What is electrochemistry?

Electrochemistry is the branch of chemistry that deals with the study of chemical reactions that involve the transfer of electrons between species. It involves the use of electricity to cause or facilitate a chemical reaction, and is used in many applications such as batteries, corrosion prevention, and electroplating.

2. What is an electrochemical cell?

An electrochemical cell is a device that converts chemical energy into electrical energy, or vice versa. It consists of two electrodes (an anode and a cathode) and an electrolyte, which is a substance that can conduct electricity. When a chemical reaction occurs between the electrodes, electrons are transferred and an electric current is produced.

3. How does oxidation-reduction (redox) reactions play a role in electrochemistry?

Oxidation-reduction (redox) reactions are the basis of electrochemistry. These reactions involve the transfer of electrons between reactants, which can be harnessed to produce electricity in an electrochemical cell. In a redox reaction, the species that loses electrons is said to be oxidized, while the species that gains electrons is reduced.

4. What is the Nernst equation and how is it used in electrochemistry?

The Nernst equation is a mathematical formula that relates the concentration of reactants and products to the voltage of an electrochemical cell. It allows us to calculate the potential of a cell under non-standard conditions, such as different concentrations or temperatures. It is an important tool in understanding and predicting the behavior of electrochemical systems.

5. How is electrochemistry used in real-world applications?

Electrochemistry has many practical applications in our daily lives. It is used in batteries to power electronic devices, in electroplating to coat metals with a thin layer of another metal, and in corrosion prevention to protect metal structures. It is also used in the production of important chemicals such as chlorine, hydrogen, and aluminum.

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