Chem+P+Worksheet+1+KEY

Chem+P+Worksheet+1+KEY - Ker Chem P Worksheet#1...

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Unformatted text preview: Ker Chem P Worksheet #1 Thursday/Friday, September 2 and 3, 2010 1) How many protons are in a neutral phosphorous atom? 15 2) How many electrons are in a neutral S atom? _/L/€;M W24, :3) h 59+- C,j1g){}:f¢:-e .2: (:3 #77:: I6 :7'#8”3i6 3) If a CI ion has 26 electrons, what charge does it have? CH? '1” C r =7;- 3~ LP hedw (,‘Jr‘flrye :2ng Lt” Q6 '5'”; 4) What is the mass number of an atom with 143 neutrons, 94 electrons, and 92 protons? megs“ #2 #72“ (He he [ ‘H’P’T/l maes— WWW->139 » 44 ”‘ a #123 5) What is the charge of an atom with 143 neutrons, 94 electrons, and 92 protons? ~4th $6251 hae-L/Aflaye: 43.474 arr—#9, 6) What element is an atom with 143 neutrons, 94 electrons, and 92 protons? fig?" :71 ”3—) L4. VflnFi-nt‘m Cm) R Gibson Page 1 of 3 Fa112010 In class on Wednesday, we did talk about where to write the mass number of an atom, but one topic that wasn’t discussed is where to write the charge of an ion. Here’s how to write the symbol for an isotope of an element: 7) How many protons are in an atom of 14C”? 6' 8) 7 How many electrons are in an atom of 14L(1+2? hefck'flTf—(rz thy y . __ , wk}: 5‘“ fire #(P+ 6 # _—;.L.{» 9) How many neutrons are in an atom of 14C 2‘? h’me‘fir“ 4:} p+aho [Li—4: {+fl>h‘3‘ :fan“ 10) Fill in the empty boxes in the table below: m- #of electrons R Gibson Page 2 of 3 Fall 2010 About the article: In Prof. Nitsche’s experiment to confirm Element 114, 480a atoms are smashed into a target of 242Pu atoms. Occasionally, when the atoms collide just right, the nuclei of the two atoms merge to form one larger nucleus. (This is cailed fusion because the two nuclei are fusing together.) Here is a picture illustrating this. PUSIN A) How many protons and neutrons are in a 48Ca atom? zest 2310 case 2 Liz-10%? B) How many protons and neutrons are in a 2“Pu atom? 44* pt: ‘M cams : 9310.: (N: we? C) How many protons and neutrons would you expect to be in the atom if the 43Ca and 242Pu atoms merge together into one nucleus? #652. ;o+-4r:)m~ #140: nr+nsr=iaa D) What the pa er we read said was that two atoms were formed. One was 286114 and the (94??) ] other was 23 114. How many protons and neutrons do each of these atoms contain? r. ,1,“ :mas-HH—ang [W P_ . P # . enzayéflwmm B) You should notice that your answers to C and D are not the same. The reason is that when the two nuclei collide, a few neutrons are kicked out of the new larger nucleus. How many neutrons are expelled when 236114 is made? How about when 287114 is formed? :1 576 l X 7 a . Hr , n 1r fibefiéfeliad :— 170/ r) 71:: L}: 4:): r. grapfillléfli I 73" i7? . :2: 3 R Gibson Page 3 of 3 Fall 2010 ...
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