TEKS Update Student Practice Books for Reading Sample Pages ...

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.