ch 13, some representative groups and families Flashcards
allotropic forms of sulfur: … or … crystals that are pale …, …, and …
needle-shaped … crystals that are .., …, …, and …
amorphous form that is …, …, and …
rhombic; octahedral; yellow; opaque; brittle; monoclinic; yellow; waxy; translucent; brittle; dark; tough; elastic
salts formed with the HSO4- (bisulfate ion) are called ….; the sulfate ion forms .. salts
acid salts; normal
sulfuric acts as an … agent and as a … with carbohydrates
oxidizing; dehydrating agent
(common sulfides and colors) ZnS- ... CdS- ... As2S3- .... Sb2S3- .... CuS- ... HgS- .... PbS- ...
white; bright yellow; lemon yellow; orange; black; black; brown-black
sulfur dioxide is a … gas with a … odor
colorless; suffocating
at room temp: f is a …, cl is a …, br is a …, and i is a ..
pale yellow gas; green gas; dark red liquid; purplish black crystal solid
HCl is used in many important
industrial processes
silver bromide and silver iodide are used on ….
photographic film
HF is used to … by reacting with SiO2 to release silicon fluoride glass and is also used to …
etch glass; frost lightbulbs
fluorides are used in … and … to reduce …
water; toothpaste; tooth decay
the inactivity of N2 gas can be explained by the act that the two atoms of N are bonded by
three covalent bonds
nature “fixes” nitrogen, or makes nitrogen .., by means of a nitrogen-fixing bacteria found in the roots of leguminous plants
combine
nitric acid is useful in making …, …, and many of the … on cars
dyes; celluloid film; lacquers
because of its ease of decomposition, nitric acid is a good
oxidizing agent
when nitric acid is mixed with HCL, the mixture is called … because of its ability to …
aqua regia; dissolve gold
molten iron from blast furnace is called
pig iron
pig iron can be used in three … that burn out … and set the ..
steel-making processes; impurities; contents
basic oxygen frnace uses a lined “…” into which the molten .. is poured. this burns out … to make a batch of steel
pot; pig iron; impurities
(alloys) melting pt is … than that of its components
lower
(alloys) an alloy is usually … than the metals that compose it
harder
(alloys) crystal structure: the size of the crystalline particles in the alloy determines many of the physical properties. if the alloy cools slowly, the crystalline particles tend to be …, thus, by heating and cooling an alloy, its properties can be … considerably
larger; altered
common alloys: brass: made of ... and .. bronze: made of ... and ... steel: made of ..., ..., ..., .., and..., which is alloyed with ... and ... sterling silver alloyed with ...
Cu; Zn; Cu; Sn; C; Mn; S; P; Si; Ni; Cr; Cu
metalloids as a group may form … or … bonds
ionic; covalent
