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Transcript of Oxides
most of the Earth's crust consists of solid oxides
result of elements being oxidized by the oxygen in air or in water Four types of oxides Basic
Neutral Basic Oxide What is Basic Oxide? basic oxide form when metals reacts with oxygen
when metal oxide are put in water, that will produce a base.
Basic oxide belong to the large group of compounds called bases Dilute Hydrochloric acid Blue litmus turns red Experiment 1) Heat Copper (II) Oxide heat 2) Litmus stays blue Dissolved copper (II) oxide 3) Copper (II) oxide is called basic oxide
since it can neutralize an acid
Also Iron (III) oxide and magnesium oxide behave the same way This is dilute hydrochloric acid. It turns blue litmus paper red, like all acids do Copper (II) oxide dissolves in it, when it is warmed. But after time, no more will dissolve The resulting liquid has no effect on blue litmus. So the oxide has neutralized the acid Acidic Oxide What is Acidic Oxide? Introduction What oxides is
Four main oxides
Neutral Experiment Powdered carbon is heated over a Bunsen until red-hot, and then plunged into a jar of oxygen. It glows bright red, and the gas carbon dioxide is formed Amphoteric oxide Carbon dioxide is slightly soluble in water.
the solution will turn litmus res
it is acidic
Also sulphur dioxide and phosphorus pentaoxide will dissolve in water to form acids What is Amphoteric oxide? Oxides of metal
Can behave as acidic oxides or as basic oxides
Ex. Aluminum and Zinc Base It reacts as a base with hydrochloric acid
Al O (s)+6HCl(aq) --> 2AlCl (aq)+3H O(l) 2 3 3 2 Acid reacts as an acidic oxide with sodium hydroxide
giving a compound called sodium aluminate
Al O (s) + 6NaOH (aq) --> 2Na AlO (aq) + 3H O(l) 2 3 3 3 2 Neutral Oxide What is Neutral Oxide? nonmetals that form oxides that show neither basic nor acidic properties
they are neutral
Ex. carbon monoxide, CO, and dinitrogen oxide, N O are neutral 2 An oxide that reacts with water to produce an acid
Nonmetal oxides are acidic
nonmetal reacting with oxygen
Acidic oxides are often gases at room temperature Work Citation Acidic Oxide. N.p., n.d. Web. 12 Mar. 2013. <http://wiki.answers.com/Q/What_is_an_acidic_Oxide_and_Basic_Oxide>.
Basic Oxide. N.p., n.d. Web. 12 Mar. 2013. <http://www.800mainstreet.com/acid_base/basic_oxides.htm>.
Education Chemistry. N.p., n.d. Web. 12 Mar. 2013. <http://chemistry.about.com/od/chemistryglossary/g/Amphoteric-Oxide-Definition.htm>.
The Encyclopedia of Science. N.p., n.d. Web. 12 Mar. 2013. <http://www.daviddarling.info/encyclopedia/O/oxide.html>.
Sharslide. N.p., n.d. Web. 12 Mar. 2013. <http://www.slideshare.net/sYhira/oxides>.
SimpleChemConcepts. N.p., n.d. Web. 12 Mar. 2013. <http://www.simplechemconcepts.com/types-of-oxides/>.