Read section 9.2 (pages ) Do problems on page 249 and on page 250. Answer question 23 on page 251. Check your answers in the back of the book, on page 926. Homework:
Write the Lewis structures for the following molecules Daily Quiz 247
1.One atom of carbon and two atoms of oxygen. 2.One atom of oxygen and two atoms of chlorine. 3.Two atoms of iodine. 4.Four atoms of fluorine and one atom of silicon. Daily Quiz 247
1.One atom of carbon and two atoms of oxygen. O=C=O Daily Quiz 247
2.One atom of oxygen and two atoms of chlorine. Cl-O-Cl Daily Quiz 247
3.Two atoms of iodine. I I Daily Quiz 247
4.Four atoms of fluorine and one atom of silicon. F F-Si-F F Daily Quiz 247
Naming Molecules
P2O5P2O5
Rule 1: The first element in the formula is always named first, using the entire element name. P2O5P2O5
Naming Molecules Rule 1: The first element in the formula is always named first, using the entire element name. P 2 O 5 phosphorous
Naming Molecules Rule 2: The second element in the formula is named using the root of the element and adding the suffix –ide. P 2 O 5 phosphorous
Naming Molecules Rule 2: The second element in the formula is named using the root of the element and adding the suffix –ide. P 2 O 5 phosphorous oxide
Naming Molecules Rule 3: P 2 O 5 phosphorous oxide This is new!
Naming Molecules Rule 3: Prefixes are used to indicate the number of atoms of each type that are present in the compound. P 2 O 5 phosphorous oxide
Naming Molecules 1mono- 2di- 3tri- 4tetra- 5penta- P 2 O 5 phosphorous oxide 6 hexa- 7hepta- 8octa- 9nona- 10deca-
Naming Molecules 1mono- 2di- 3tri- 4tetra- 5penta- P 2 O 5 diphosphorous pentoxide 6 hexa- 7hepta- 8octa- 9nona- 10deca-
Naming Molecules Exception: The first element never uses the prefix mono-.
Naming Molecules Exception: The first element never uses the prefix mono-. CO carbon monoxide
Naming Molecules Exception: The first element never uses the prefix mono- CO carbon monoxide Not monocarbon monoxide.
Naming Molecules You will have to use these rules on your next test.
Naming Molecules You will have to use these rules on your next test. You may use the flow chart on any test or quiz I give for the rest of the year.
Common Names
We don’t usually talk about dihydrogen monoxide
Common Names We don’t usually talk about dihydrogen monoxide H2OH2O
Common Names We don’t usually talk about dihydrogen monoxide. It’s just called water. H2OH2O
Common Names dihydrogen monoxide H 2 O water
Common Names nitrogen trihydride
Common Names nitrogen trihydride NH 3
Common Names nitrogen trihydride NH 3 ammonia
Common Names dinitrogen tetrahydride
Common Names dinitrogen tetrahydride N 2 H 4 hydrazine
Common Names dinitrogen monoxide
Common Names dinitrogen monoxide N 2 O
Common Names dinitrogen monoxide N 2 O nitrous oxide laughing gas
Common Names nitrogen monoxide
Common Names nitrogen monoxide NO nitric oxide
Common Names I will not ask you to memorize common names. I just want you to know they exist.
Naming Acids If a molecule forms an acid when dissolved in water, there are other rules.
Naming Acids Acid rule 1: binary acids (HX)
Naming Acids Acid rule 1: binary acids (HX) hydro________ic acid Fill in the blank with the root of the element
Naming Acids Acid rule 1: binary acids (HX) hydro________ic acid Fill in the blank with the root of the element HCl
Naming Acids Acid rule 1: binary acids (HX) hydro________ic acid Fill in the blank with the root of the element HCl hydrochloric acid
Naming Acids Acid rule 1: binary acids (HX) hydro________ic acid Fill in the blank with the root of the element HBr
Naming Acids Acid rule 1: binary acids (HX) hydro________ic acid Fill in the blank with the root of the element HBr hydrobromic acid
Naming Acids Acid rule 2: polyatomic ions (HXY) with no oxygen
Naming Acids Acid rule 2: polyatomic ions (HXY) with no oxygen hydro________ic acid Fill in the blank with the root of the polyatomic ion
Naming Acids Acid rule 2: polyatomic ions (HXY) with no oxygen hydro________ic acid Fill in the blank with the root of the polyatomic ion Look it up on page 224
Naming Acids Acid rule 2: polyatomic ions (HXY) with no oxygen hydro________ic acid Fill in the blank with the root of the polyatomic ion HCN
Naming Acids Acid rule 2: polyatomic ions (HXY) with no oxygen hydro________ic acid Fill in the blank with the root of the polyatomic ion HCN hydrocyanic acid
Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite
Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite HNO 3
Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite HNO 3 Look it up on page 224
Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite HNO 3 NO 3 - nitrate
Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite HNO 3 NO 3 - nitric acid nitrate
Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite HNO 2
Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite HNO 2 NO 2 -
Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite HNO 2 NO 2 - nitrite
Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite HNO 2 NO 2 - nitrous acid nitrite
Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite An easy way to remember this rule…
Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite I ate it! Ick! Don’t bite us!
Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite I ate it! Ick! Don’t bite us!
Read section 9.2 (pages ) Do problems on page 249 and on page 250 Answer question 23 on page 251 Check your answers in the back of the book, on page 926. For the rest of the period…