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A very Serious Threat or An issue of Concern?

A very Serious Threat or An issue of Concern?. DHMO. Dihydrogen Monoxide 
(DHMO) The dangers, uses and potential threats posed by this chemical, Dihydrogen Monoxide, are 
widespread, and some feel, terrifying. Here is just a small taste of what Dihydrogen Monoxide 
(DHMO) is:.

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A very Serious Threat or An issue of Concern?

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  1. A very Serious Threator An issue of Concern?

  2. DHMO DihydrogenMonoxide 
(DHMO) The dangers, uses and potential threats posed by this chemical, Dihydrogen Monoxide, are 
widespread, and some feel, terrifying. Here is just a small taste of what Dihydrogen Monoxide 
(DHMO) is:

  3. Some call Dihydrogen Monoxide the "Invisible Killer" Others think dihydrogen monoxide should be Banned Dihydrogen Monoxide is linked to gun violence Dihydrogen monoxide was found at every 
recent school shooting

  4. Athletes use DIHYDROGEN MONOXIDE, 
or DHMO, to enhance performance Dihydrogen Monoxide has been found 
in our rivers, lakes, oceans and streams Dihydrogen Monoxide is a major component of acid rain Thousands die each year after inhaling dihydrogen monoxide Dihydrogen Monoxide can be deadly!!

  5. Unit 3 Ionic Including Transitions Polyatomic Covalent Naming compounds

  6. Ionic Compounds Write the name of the element with the positive oxidation #, first in the formula. Write the root of the name of the element with the negative oxidation #. Add -ide to the root.

  7. Ionic With Transition • If the first element is a transition element, you must determine the oxidation number (generally it is the subscript of other element) and show it as a roman numeral • Roman Numerals: • I 1 • II 2 • III 3 • IV 4 • V 5 • VI 6

  8. Ionic Naming Examples Beryllium Calcium Zinc (II) Sodium Ox Fluor Iod Brom ide ide ide ide BeO CaF2 ZnI2 NaBr

  9. Ionic Naming Practice • Na2S • MgCl2 • AlF3

  10. Polyatomic Ionics • Write the name of the element (or polyatomic) with the positive oxidation #. • Write the root of the name of the element with the negative oxidation number and add -ide to the root. • OR Write the polyatomic name.

  11. Polyatomic naming examples Calcium Beryllium Ammonium Hydronium Sulfate Nitrate Hydroxide Fluoride CaSO4 Be(NO3)2 NH4OH H3OF

  12. Polyatomic naming practice Ba(OH)2 BeCO3 Li2SO4

  13. Covalent Naming (Binary) 1. The element with the lower group number is written first in the name; the element with the higher group number is written second in the name. Exception: when the compound contains oxygen and a halogen (Group 17), the name of the halogen is the first word in the name.

  14. Covalent Naming (con’t) 2. If both elements are in the same group, the element with the higher period number is written first in the name. 3. The second element in the name is named as if it were an anion (ionically) , i.e., by adding the suffix -ide to the name of the element.

  15. Covalent Naming (con’t) 4. Prefixes are used to indicate the number of atoms of each nonmetal element in the chemical formula for the compound. Exception: if the compound contains one atom of the element that is written first in the name, the prefix "mono-" is not used.

  16. Covalent Prefixes Number of atoms 1 2 3 4 5 6 7 8 9 10 Prefix Mono Di Tri Tetra Penta Hexa Hepta Octa Nona Deca NOTE: The only time we don’t use a prefix is when mono would begin the name.

  17. Covalent Name Examples Silicon Dinitrogen Sulfur Diphosphorous Tetrafluoride Trisulfide Hexachloride Pentoxide SiF4 N2S3 SCl6 P2O5

  18. Covalent Naming Practice CO2 CF4 P4S5 B2Si

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