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Warm Up What type of ion does Calcium form? Anion or Cation Does it gain or loose electrons and how...
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Transcript of Warm Up What type of ion does Calcium form? Anion or Cation Does it gain or loose electrons and how...
Warm Up
• What type of ion does Calcium form?Anion or Cation
• Does it gain or loose electrons and how many?
• Write the formula for the ion that calcium forms:
• Write the individual ions and then the chemical formula for Calcium iodide:
• Write the individual ions and then the chemical formula for Calcium phosphide:
6.5
Molecular Compounds• Composed of two non-metals that share
electrons• Prefixes help to distinguish the amount of each
element present in a compound
Naming covalently bonded elements requires you to indicate the amount of each element present!!!
(There are no ions to indicate how many of each element there is!!!)
Prefixes to memorize:mono- 1 hexa- 6di- 2 hepta- 7tri- 3 octa- 8tetra- 4 nona- 9penta- 5 deca- 10
Naming (Nomenclature) Rules
1st- Check to see if the compound is ionic or covalent(metal + nometal) (two non-metals)
2nd - If 2 nonmetals then use the following set up.
Naming (Nomenclature) Rules
Example: N2O : Dinitrogen monoxide
2 nitrogens 1 oxygen
Numeric Prefix + name 1st element numeric prefix + name 2nd element+ide
** No prefix is given to the first element only if there is only 1 of that element present in the compound!!!**
Example: CO : Carbon monoxide
Now it’s your turn!!!
• Name the following: CCl4
P2O5
N2O3
• Write the chemical formula for the following: Carbon dioxideDichlorine heptoxide
Is it Ionic or Covalent???
Ionic• Metal + nonmetal• Names have no numeric
prefixes
Covalent• 2 nonmetals• Names will have numeric
prefixes
Ionic or covalent???
• Sodium Chloride• Carbon tetrachloride• Na2O
• NO
• Ionic• Covalent• Ionic• Covalent
Reminder:
When naming a chemical using the formula given1. Identify if it is ionic or covalent2. Use the naming rules
Writing formulas1. Identify if it is ionic or covalent based on the name2. Ionic compounds will require you to figure out
charges and cross multiply. Covalent molecules give you the amounts in the name
Name the following chemicals
• N2F2
• AlCl3
• ClO4
• K2S
• S2F10
• Dinitrogen difluoride• Aluminum chloride• Chlorine tetraoxide• Potassium sulfide• Disulfur decaflouride
Write the formula for the following chemicals
• Lithium sulfide• Diphosphorus trioxide
• Li2S
• P2O3
6.6 Naming Common Acids• Acids produce H+ ions when dissolved in water
Binary Acids: H+ ions paired with an Anion (-)
Naming: HCl 1) Prefix hydro-2) anion – suffix – ic chlorine chloric3) Add term acid
Example: HCl hydrochloric acid
Your Turn!!
Name: H2S
HBr
Write the formula: Hydrofluoric acidHydrophosphoric acid
Oxyacids• H+ ion and an oxyanion
Oxyanions: a polyatomic ion that contains oxygen
Naming: Use the polyatomic ion name only!Change suffix of the polyatomic ion according to the following
rules:
- ate ending turns to – ic NO3- HNO3 nitric acid
- ite ending turns to – ous NO2- HNO2 nitrous acid
** see list on page 160** Be familiar with those acids
Time to Practice !!!