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GOOD STUDENT LAB REPORT! REPORT! 49/50
Breaking up is hard to do – Separating Sand & Salt Purpose: The purpose of this experiet is to sep"r"te " ixture of s"# "# s"$t% Materials: S"$$ &e"'er • E$e(tri( &"$"(e • S"# • S"$t • )"ter • Gr"#u"te# (*$i#er • Stirri+ ro# • ,i$ter p"per • ,$"s' • Ru&&er po$i(e" • )"sh &ott$e • ,ue$ • Buse &urer (op$ete -ith ru&&er tu&i+ "# " sour(e of +"s • .ot h"#s • su$"tor p"# • Ri+ st"# (op$ete -ith " ri+ • )ire +"ue • Stri'er • Pre-lab Questions: 1% )" )"ter ter -i$$ -i$$ &e usefu$ i sep"r"ti sep"r"ti+ + the s"$t "# "# s"# &e("use s"$t s"$t is so$u&$e so$u&$e i -"ter2 -"ter2 -hi(h "$$o-s it to #isso$3e ito " hoo+eous ixture2 "$$o-i+ for fi$teri+ of the s"#% % Properties Properties of s"# s"# "# s"$t th"t th"t -i$$ he$p he$p sep"r"te sep"r"te the "re th"t s"$t s"$t is -"ter -"ter so$u&$e2 so$u&$e2 "# the s"# is iso$u&$e i -"ter% % The three three thi+s thi+s th"t th"t (ou$# (ou$# +o -ro+ i this this experiet experiet "re6 Duri+ the e3"por"tio of -"ter -hi$e usi+ the Buse &urer2 the f$"s' i+ht • (r"(' or exp$o#e 7 this (" &e "3oi#e# &* ot he"ti+ the f$"s' o3er " pro$o+e# perio# of tie2 "# ot he"ti+ it too itese$*% Soe of the s"# "* &e $ost #uri+ the fi$tr"tio 7 this (" &e "3oi#e# &* • ("refu$$* fi$teri+ the ixture2 "# "'i+ sure th"t "$$ of the s"# h"s &ee -"she# off fro the &e"'er2 "# the ru&&er po$i(e"% Soe of the s"$t "* &e $ost if the s"$t #oes8t #isso$3e (op$ete$* or if soe of • the s"$t -"ter is spi$$e# 7 this (" &e "3oi#e# &* "'i+ sure th"t "$$ of the s"$t h"s #isso$3e#2 "# &* &ei+ 3er* ("refu$ -hi$e stirri+ the ixture ot to spi$$ it%
GOOD STUDENT LAB REPORT! 49/50
Procedure: 1% P$"(e " s"$$ &e"'er o the &"$"(e% Press the reero &utto to "'e sure to t"'e the "ss of o$* the s"# "# s"$t s"p$e "# ot the &e"'er% % "refu$$* pour the s"# "# s"$t ixture oto the &e"'er% Re(or# the "ss i *our #"t" t"&$e% % :e"sure out 10L of -"ter usi+ the +r"#u"te# (*$i#er% A## the -"ter to the &e"'er "# +et$* stir the s"p$e -ith " stirri+ ro# for se3er"$ iutes% Be ("refu$ ot to spi$$% 4% O&t"i " pie(e of fi$ter p"per -rite *our "es e"r the top2 o BOT. si#es% Use the &"$"(e to "ss the fi$ter p"per "# re(or# this "ss i the #"t" t"&$e% 5% O&t"i " ($e"2 #r* f$"s' "# use the &"$"(e to #eterie its "ss "s -e$$% Re(or# the "ss of the f$"s' i the #"t" t"&$e% ;% Prep"re " fi$teri+ set% )he fi$teri+ is (op$ete2 ("refu$$* reo3e the fi$ter p"per fro the fue$ "# p$"(e o the i#i("te# tr"* to #r* o3eri+ht% 9% Set up *our Buse &urer "# f$"s' "s #ire(te# &* *our istru(tor% E3"por"te the -"ter i the f$"s' &* &oi$i+ uti$ the (otets "re #r*% BE ARE,UL NOT TO .EAT TOO LONG OR TOO NTENSEL? 7 ONTNUNG TO .EAT A DR? ,LAS@ )LL AUSE T TO RA@ OR EPLODE! 10% )he "$$ the -"ter h"s &ee e3"por"te#2 use the hot h"#s to p$"(e the hot f$"s' o " isu$"tor p"# to (oo$% DO NOT PLAE .OT ,LAS@ DRETL? ON T.E OUNTER 7 T )LL RA@! 11% f tie "$$o-s2 use the &"$"(e to "ss the (oo$e# f$"s' "# its (otets% f there is ot eou+h tie2 $e"3e " s$ip of p"per -ith *our "es o it ext to the (oo$i+ f$"s' "# the istru(tor -i$$ "ss it for *ou% 1% The istru(tor -i$$ "$so "ss the #rie# fi$ter p"per "# s"#% She -i$$ #istri&ute this #"t" i ($"ss o ,ri#"*2 "s -e$$ "s o the ($"ss -e&site% 1% BE SURE TO LEAN UP BE,ORE LEANG!
Data Table:
GOOD STUDENT LAB REPORT! 49/50
:"ss of #r* s"# "# s"$t ixture C+
10%59
:"ss of #r*2 ept* f$"s' C+
19%>=
:"ss of #r* fi$ter p"per C-ith "es "$re"#* -ritte C+ :"ss of (oo$ f$"s' "# (otets C+
1%0 1%05
:"ss of #r* s"# "# fi$ter p"per C+
9%5
u"$it"ti3e O&ser3"tios6 Upo &oi$i+ the s"$t -"ter2 s"$$ pie(es of s"$t -ere poppi+ out of the f$"s' • Not "$$ +r"is of the s"# -ere (o$$e(te# fro the &e"'er • Calculations: 1% :"ss of #r* s"# "# fi$ter p"per 7 :"ss of #r* fi$ter p"per F :"ss of s"# 9%5+ 7 1%0+ F >%51+ The "ss of s"# is >%51+% % :"ss of (oo$ f$"s' "# (otets 7 :"ss of #r*2 ept* f$"s' F :"ss of s"$t 1%05+ 7 19%>=+ F %1>+ The "ss of s"$t is %1>+% Mass of sand % Mass of sand ∧salt mixture x 100 F Per(et of s"# 8.51 g 10.59
g x 100 F >0%4
The percent of sand is 80.4 . 4%
Mass of salt Mass of sand ∧salt mixture x 100 F Per(et of s"$t 2.18 g 10.59
g x 100 F 0%;
The percent of salt is 20.6 . Post-lab Questions:
1% A((or#i+ to * #"t" the su of the per(et s"$t "# s"# eHu"$s 101% The per(et"+es #o ot eHu"$ 100 &e("use there -"s " error i the experiet -hi(h resu$te# i " "##itio"$ 0%1+ of "tter% % The sep"r"tio te(hiHues th"t -ere pr"(ti(e# i this $"& -ere fi$tr"tio "# e3"por"tio%
GOOD STUDENT LAB REPORT! 49/50
•
•
,i$tr"tio is effe(ti3e i sep"r"ti+ so$i#s fro $iHui#s% Duri+ fi$tr"tio " ixture is poure# throu+h " fue$ fitte# -ith fi$ter p"per% ,i$ter p"per h"s ti* ho$es "$$o-i+ o$* $iHui# to p"ss throu+h "# so$i# p"rti($es to st"* o the p"per% E3"por"tio is effe(ti3e i sep"r"ti+ p"rti($es i so$utios% The so$utio is he"te# so th"t the so$3et -i$$ e3"por"te2 "# the so$i# su&st"(e is $eft &ehi#%
Conclusion: The o&Ie(ti3e of the experiet -"s to sep"r"te " ixture of s"# "# s"$t% Throu+h usi+ +i3e "teri"$s2 "# fo$$o-i+ the pro(e#ure2 the o&Ie(ti3e -"s et% The ixture (" &e sep"r"te# ito s"# "# s"$t throu+h fi$tr"tio "# e3 "por"tio% The s"# (" &e sep"r"te# fro the ixture throu+h fi$tr"tio% or#er to fi$ter the s"# fro the ixture2 s"$t ust first &e #isso$3e# i -"ter% The ixture of s"$t -"ter "# s"# (" &e the fi$tere# throu+h " fue$ fitte# -ith fi$ter p"per% ,i$ter p"per o$* "$$o-s $iHui#s thou+h2 "$$o-i+ for the s"# to st"* isi#e it% The s"$t (" &e sep"r"te# fro -"ter throu+h e3"por"tio% Duri+ e3"por"tio the so$3et e3"por"tes2 $e"3i+ so$i# p"rti($es &ehi#% The o3er"$$ resu$ts fro the experiet "re th"t the 10%59 +r"s of the hetero+eeous ixture (osiste# of >%51 +r"s of s"#2 "# %1> +r"s of s"$t% The s"# "'es up >0%4 of the ixture2 -hi$e s"$t "'es up 0%; of the ixture% )h"t i+ht h"3e "ffe(te# the resu$ts -ere errors% Duri+ the fi$tr"tio pro(ess2 ot "$$ +r"is of s"# -ere (o$$e(te#% A$so #uri+ the e3"por"tio pro(ess2 #ue to itesi3e he"t s"$t st"rte# poppi+ out of the f$"s'% E3e thou+h "tter -"s $ost2 the fi"$ "ss of s"# "# s"$t is 0%1 +r"s he"3ier2 th" the ori+i"$ "ss% This is "$so the re"so -h* the per(et"+es of s"$t "# s"# #o ot "## up to 100% The "##itio"$ "ss (oes fro " error i the sep"r"tio pro(esses% The -"ter th"t -"s use# to sep"r"te s"$t "# s"# (ou$# re"i i the s"p$es either fro i"#eHu"te tie perio# for the s"# to #r*2 or e3"por"ti+% This (ou$# h"3e &ee pre3ete# throu+h pro3i#i+ " $o+er "out of tie for the s"# to #r*2 "s -e$$ "s for the &oi$i+ of the so$utio% t -ou$# "$so &e he$pfu$ to p$"(e the sep"r"te# p"rti($es i hot o3e for " perio# of tie2 to esure th"t &oth s"p$es "re (op$ete$* #r*% (o($usio it is possi&$e to sep"r"te 3"rious su&st"(es fro oe "other throu+h #ifferet te(hiHues -ithout (h"+i+ the (hei("$ "'eup of the su&st"(e%