Andrés M. Díaz Gómezvidrio
NAMING AND WRITING COMPOUNDS
WRITING FORMULAS
• In order to write a formula you must know and identify the
elements and ions you are working with by us...
EXAMPLES
• Sodium Chloride: Na+ Cl- = NaCl
• Magnesium Oxide: Mg2+ O2- = MgO
• Calcium Bromide: Ca2+ Br- = CaBr2
• Aluminu...
NAMING COMPOUNDS
• The first and most vital step to name a compound is to know
what type of compound are you working with....
IONIC COMPOUNDS
• Ionic compounds are formed when a metal gives electrons to a
non-metal. Basically if the compound contai...
IONIC COMPOUNDS (WITH TRANSITIONAL METALS)
• The only change it has to be made in this situation is that we
need to specif...
COVALENT COMPOUNDS
• Covalent compounds are formed when two non-metals bond
together by sharing electrons.
• In this case ...
POLYATOMIC IONS
• Polyatomic ions are two or more atoms covalently bonded, and
when they are bonded to metals they use the...
THANKS FOR YOUR ATTENTION
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Naming and writing compounds

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Published on: Mar 3, 2016
Published in: Education      
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Transcripts - Naming and writing compounds

  • 1. Andrés M. Díaz Gómezvidrio NAMING AND WRITING COMPOUNDS
  • 2. WRITING FORMULAS • In order to write a formula you must know and identify the elements and ions you are working with by using your periodic table. • Next you have to identify and order the charges by writing the symbol and charge of the cation first and then the symbol and charge of the anion. • At last you need to use the Criss-Cross rule to balance the charges resulting in the subscripts of the formula.
  • 3. EXAMPLES • Sodium Chloride: Na+ Cl- = NaCl • Magnesium Oxide: Mg2+ O2- = MgO • Calcium Bromide: Ca2+ Br- = CaBr2 • Aluminum Sulfide: Al3+ S2- = Al2S3
  • 4. NAMING COMPOUNDS • The first and most vital step to name a compound is to know what type of compound are you working with. There are 3 types: • Ionic Compounds (Without transitional metals) • Ionic Compounds (With transitional metals) • Covalent Compounds
  • 5. IONIC COMPOUNDS • Ionic compounds are formed when a metal gives electrons to a non-metal. Basically if the compound contains a metal it is ionic, but the rules can change when there are transitional metals. • Compounds use suffixes on the non-metal names, making them ending in ide, for example: AlCl3 Aluminum Chloride • In ionic compounds we only use suffixes • Subscripts do not change the way the compounds are named.
  • 6. IONIC COMPOUNDS (WITH TRANSITIONAL METALS) • The only change it has to be made in this situation is that we need to specify the charge the transitional metal is using by expressing it with roman numerals, for example: • Copper ( I ) Oxide is Cu2O • ( I ) = +1 • ( II ) = +2 • ( III ) = +3 • ( IV ) = +4 •
  • 7. COVALENT COMPOUNDS • Covalent compounds are formed when two non-metals bond together by sharing electrons. • In this case aside from using the suffix ide for the last non-metal we should also use prefixes for the last non-metal like mono, di, tri etcetera. To reveal the number of atoms involved For example: • CO2 = carbon dioxide • Mono = 1 • Di = 2 • Tri = 3 • Tetra = 4
  • 8. POLYATOMIC IONS • Polyatomic ions are two or more atoms covalently bonded, and when they are bonded to metals they use the same rules for compounds. The only difference is that they have predetermined names. For example: • OH-1 Hydroxide • SO4 -2 Sulfate • CO3 -2 Carbonate • C3H8 Propane
  • 9. THANKS FOR YOUR ATTENTION