10
Noooo, not another Power Point…. by Sue Boudreau, March 9 th , 2008 Boring

Noooo,$notanother$ · 2012-04-02  · If$you$make$Electricity$with$Chemical$ Reac:ons…$ It’scalleda‘battery’!&& Here’ssomeyoucanmake…& Zn Nail& Cupenny&

  • Upload
    others

  • View
    2

  • Download
    0

Embed Size (px)

Citation preview

Page 1: Noooo,$notanother$ · 2012-04-02  · If$you$make$Electricity$with$Chemical$ Reac:ons…$ It’scalleda‘battery’!&& Here’ssomeyoucanmake…& Zn Nail& Cupenny&

Noooo,  not  another  

Power  Point….    by    Sue  Boudreau,  March  9th,  

2008    

Boring  

Page 2: Noooo,$notanother$ · 2012-04-02  · If$you$make$Electricity$with$Chemical$ Reac:ons…$ It’scalleda‘battery’!&& Here’ssomeyoucanmake…& Zn Nail& Cupenny&
Page 3: Noooo,$notanother$ · 2012-04-02  · If$you$make$Electricity$with$Chemical$ Reac:ons…$ It’scalleda‘battery’!&& Here’ssomeyoucanmake…& Zn Nail& Cupenny&

The  mystery  of  electrochemistry…   Electrochemistry  studies  chemical  reactions  which  take  place  in  a  solution  between  two  charged  plates  or  ‘electrodes’.    

 Electrodes  are  usually  a  metal.    

 The  solution  has  +ive  and  –ive  ions  in  it  from  an  ionic  salt.  The  solution  is  called  the  ‘electrolyte’.  

Page 4: Noooo,$notanother$ · 2012-04-02  · If$you$make$Electricity$with$Chemical$ Reac:ons…$ It’scalleda‘battery’!&& Here’ssomeyoucanmake…& Zn Nail& Cupenny&

What  if  you  put  Electricity  through  a  Solu:on?  

-­‐ive  electrode  

+ive  electrode  

Ions in solution

Page 5: Noooo,$notanother$ · 2012-04-02  · If$you$make$Electricity$with$Chemical$ Reac:ons…$ It’scalleda‘battery’!&& Here’ssomeyoucanmake…& Zn Nail& Cupenny&

Electrolysis  and  Electropla:ng    If  you  put  a  voltage  across  an  electrolyte,  you  can  separate  the  ions  like  this…              

   Electrolysis  is  when  electricity  breaks  down  a  compound.    

 Electroplating  is  when  metals  ions  coat  a  metal  electrode.    

Page 6: Noooo,$notanother$ · 2012-04-02  · If$you$make$Electricity$with$Chemical$ Reac:ons…$ It’scalleda‘battery’!&& Here’ssomeyoucanmake…& Zn Nail& Cupenny&

Used  for  silver  pla:ng  and  ___    

Page 7: Noooo,$notanother$ · 2012-04-02  · If$you$make$Electricity$with$Chemical$ Reac:ons…$ It’scalleda‘battery’!&& Here’ssomeyoucanmake…& Zn Nail& Cupenny&

If  you  make  Electricity  with  Chemical  Reac:ons…    It’s  called  a  ‘battery’!     Here’s  some  you  can  make…  

Zn  Nail  

Cu  penny  

Page 8: Noooo,$notanother$ · 2012-04-02  · If$you$make$Electricity$with$Chemical$ Reac:ons…$ It’scalleda‘battery’!&& Here’ssomeyoucanmake…& Zn Nail& Cupenny&

How  Real  BaGeries  work:  

Page 9: Noooo,$notanother$ · 2012-04-02  · If$you$make$Electricity$with$Chemical$ Reac:ons…$ It’scalleda‘battery’!&& Here’ssomeyoucanmake…& Zn Nail& Cupenny&

How  would  your  life  be  different  without  this  man?  

Alessandro  Volta,  invented  the  electric  battery  in  1800  

Page 10: Noooo,$notanother$ · 2012-04-02  · If$you$make$Electricity$with$Chemical$ Reac:ons…$ It’scalleda‘battery’!&& Here’ssomeyoucanmake…& Zn Nail& Cupenny&

Where  is  Electrochemistry  Important?    Protective  coating  of  objects  with  metals  or  metal  oxides  through  

electro-­‐deposition  ex.  Chrome  plating.    

  Getting  metals  from  ore,  like  aluminum  and  titanium.    

  Batteries  use  electochemical  reactions  to  make  electricity.  

  Photosynthesis  is  an  electrochemical  process.  

  So  is  respiration!    

  Nerve  impulses  are  based  on  electric  current  generated  by  the  movement  of  sodium  and  potassium  ions  into  and  out  of  cells  

  MAKE  A  SLIDE  ILLUSTRATING  and  EXPLAINING    ONE  USE  OF  ELECTROCHEMISTRY.