Polyatomic Ions  Bonding, writing formule and naming compounds
<ul><li>Bonding Revision </li></ul><ul><li>Covalent Bonding </li></ul><ul><li>* </li></ul><ul><li>* </li></ul><ul><li>Exam...
Writing Formulae:   ** These ones are a little bit different. You group the hydrogen’s together. ** ** Hydrogen Magnesium ...
Try these: <ul><li>Lead hydroxide </li></ul><ul><li>Calcium nitrate </li></ul><ul><li>Zinc nitrate </li></ul><ul><li>Magne...
Naming Compounds <ul><li>What are the rules for naming compounds? </li></ul>
Rule One <ul><li>When you have two different  elements , there are usually only two words in the compound name.  </li></ul...
When you are working with non-metals like oxygen (O) and chlorine (Cl), the prefix (section at the beginning of the word) ...
<ul><li>When you are working with non-metals like oxygen (O) and chlorine (Cl), the prefix (section at the beginning of th...
Now we'll build on that example. What if you have one carbon (C) and two oxygen (O) atoms?  (1) Carbon + (2) Oxygen =  One...
Naming Compounds Mg 3 (PO 4 ) 2 Fe 2 (SO 4 ) 3 MgBr 2 NaHCO 3 Ca(HCO 3 ) 2 FeCl 2 Al 2 O 3 MgSO 4 AlCl 3 Zn(NO 3 ) 2 KNO 3...
Try this web site for Home Work <ul><li>http://www.syvum.com/cgi/online/serve.cgi/members/gillilandd/quizzes/naming_formul...
Next week <ul><li>Balancing Equations and revision. Your test will be given to you while at camp. </li></ul>
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Year 8 Chemistry - Formula writing

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Year 8 Chemistry - Formula writing

  1. 1. Polyatomic Ions Bonding, writing formule and naming compounds
  2. 2. <ul><li>Bonding Revision </li></ul><ul><li>Covalent Bonding </li></ul><ul><li>* </li></ul><ul><li>* </li></ul><ul><li>Example: </li></ul><ul><li>Ionic Bonding </li></ul><ul><li>* </li></ul><ul><li>* </li></ul><ul><li>Example </li></ul>
  3. 3. Writing Formulae: ** These ones are a little bit different. You group the hydrogen’s together. ** ** Hydrogen Magnesium Aluminium Potassium Iron II Calcium Iron III Copper II HCO 3 - NO 3 - SO 4 2- OH -
  4. 4. Try these: <ul><li>Lead hydroxide </li></ul><ul><li>Calcium nitrate </li></ul><ul><li>Zinc nitrate </li></ul><ul><li>Magnesium hydrogen carbonate </li></ul><ul><li>Ammonium carbonate </li></ul><ul><li>Aluminium sulfate </li></ul>
  5. 5. Naming Compounds <ul><li>What are the rules for naming compounds? </li></ul>
  6. 6. Rule One <ul><li>When you have two different elements , there are usually only two words in the compound name. </li></ul><ul><li>The first word is the name of the first element. The second word tells you the second element and how many atoms there are in the compound. The second word also ends in IDE. That's the suffix. </li></ul>
  7. 7. When you are working with non-metals like oxygen (O) and chlorine (Cl), the prefix (section at the beginning of the word) of the second element changes based on how many atoms there are in the compound. It's like this Let's start with Carbon monoxide (CO). You have one carbon (C) atom and one oxygen (O) atom (you can also use the prefix MONO to say one atom). Remember that the second word ends in -ide. So... (1) Carbon + (1) Oxygen = Carbon monoxide
  8. 8. <ul><li>When you are working with non-metals like oxygen (O) and chlorine (Cl), the prefix (section at the beginning of the word) of the second element changes based on how many atoms there are in the compound. It's like this </li></ul>Let's start with Carbon monoxide (CO). You have one carbon (C) atom and one oxygen (O) atom (you can also use the prefix MONO to say one atom). Remember that the second word ends in -ide. So... (1) Carbon + (1) Oxygen = Carbon monoxide
  9. 9. Now we'll build on that example. What if you have one carbon (C) and two oxygen (O) atoms? (1) Carbon + (2) Oxygen = One last example and we'll call it quits. Now you have one carbon (C) and four chlorine (Cl) atoms. (1) Carbon + (4) Chlorine = Rule 2 When there is more than two elements in the compound, the name usually ends in ate. CaCO3 = Calcium Carbonate Zn(NO3)2 = Zinc Nitrate MgSO4 = _______________________________
  10. 10. Naming Compounds Mg 3 (PO 4 ) 2 Fe 2 (SO 4 ) 3 MgBr 2 NaHCO 3 Ca(HCO 3 ) 2 FeCl 2 Al 2 O 3 MgSO 4 AlCl 3 Zn(NO 3 ) 2 KNO 3 Na 2 SO 4 CuO KOH FePO 4 CaBr 2 NaOH FeI 3 ZnS CaCl 2 K 2 O NaI
  11. 11. Try this web site for Home Work <ul><li>http://www.syvum.com/cgi/online/serve.cgi/members/gillilandd/quizzes/naming_formulas.tdf </li></ul><ul><li>Email me your answers by Friday: </li></ul><ul><li>[email_address] </li></ul>
  12. 12. Next week <ul><li>Balancing Equations and revision. Your test will be given to you while at camp. </li></ul>

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