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22 TThis his page page page mmay may not not be be reproduced. reproduced. 36 Fizz Fact ry TEKS UPDATE—Reading, UPDATE—Re ea ading, GGrade Gr ra ade 7 Whoev Whoever er er thought thought a a seemingly seemingly innocent innocent combination combination of of candy candy plus plus soda soda would would equal equal a a fantastic fountain of FIZZ! The rreaction eaction witnessed after combining M Mentos® entos® candies with soda baffles ev even en some scientists. MMost ost ost seem seem to to think think that that the the water water molecules molecules surr surr surrounding ounding ng the soda soda’s ’ s carbon dio dioxide xide gas ar are e disturbed when the candies ar are e dr dropped opped in. TTiny iny pits on the sur surface face face of of each each piece piece of of candy pr provide o vide per perfect fect places for ne new w carbon dio dioxide xide bubbles to form. The he candies candies qu quickly qquickly q sink sink to to the the bottom bottom of of the the bottle, bottle, adding adding to to the the r rreaction eaction bby y pushing the he liquid abo above v e the them hem up and out of the bottle. Why not tr try y it yyourself? ourself? GGather ather the materials belo below, w, , fol follo follow w the dir directions, ections, and form y yyour our oown wn opinion—that is, if y your our brain isn isn’t ’ t too soggy after being ing in soda-blasted! Materials M aterials roll r oll of Mentos® M Mentos® candy 2-liter bottle of diet soda index card car card sheet of paper ca tape Directions ection ections 1. Find F in nd n a large, outdoor location ion that that is is grassy grassy and and open. open. en en. RRemember, R Remember, , things things will wil will probably pr p o obably S get messy! 2. Unwrap U Un nwrap p the entir entire roll of candy. caae y. 3. Using UUsing Us sing yyour your piece of paper, paper create eate a long g tube t big enough for the candy candy to slide through. thr t rough. TTape the the side side of of the th he tube so i it r remains emains rrolled. olled. aeate 4. Position P o osition the diet soda bottl bottle e so it t rremains emains upright. upright. OOpen Open the bottle. 5. Holding Holdin olding ding the the tube tube with with one one hand, ha hand, cover co ver er the bottom opening with the index card. car d. 6. Slip S lip ip the the candy candy andy Sape STape into into into the the the tube tu tube so the pieces are ar are resting r esting in a column. 7. Flip F lip lip the the tube tube into into the the opening opening of of the the soda soda bottle, bottle, and and watch watch liquid liquid fountain fountain into into the air! andyy. , cr S a a a SS SS SSa Sa Sam Sam Sa Samp SS SS SS SS Sa SS Sa SSa Saa amp aa aa mmp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mpl mpl mp mp mp mp mpll mp mp mp mp mp mp mp mp mp mpp pl ple le le lllee ee ee ee eee ee © © ECS ECS Learning Learning SSystems, Systems, IInc. nc. TEKS Update Student Practice Books for Reading—Sample Pages, Grades 3–8 ©ECS Learning Systems, Inc.
TEKS UPDATE—Reading, UPDATE—R TE—Re eading, Grade Gr Gra ade 7 Lava FFounta Founta nt n n �� l�� l��l�� pl� �� mp�� mp�� mp� m�� m�� m�� m� mp�� SS Sa Sa Sa Sa Sam SSa Sa Sa Sa Sa Saa Sa Saaaa aaam am am am am am am am am am am am am am am am am ammmmm aam aaaaaa mmmmp mppppppppppppppppppp mp mpl mple mp mp mp mp mp mp mp mp pl pl pl pl pl pl pl le le le le llee ee ee ee ee S m�� aaaaaaaam� � �� © ECS Learning Systems, S Systems, Inc. 37 ©ECS Learning Systems, Inc. TEKS Update Student Practice Books for Reading—Sample Pages, Grades 3–8 TThis his page mmay ay no not t be be repro reproduced. 23
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