Chemical Symbols,

1
Tootsie Pop Chemistry

• Chemical Symbols,
• Formulas,
• and Equations

2
Supplies

• Tootsie-Pop (different color for each person in
  the group)
• Colored pencils
• Colored squares of paper to represent additional
  pop wrappers
• Arrows and signs
• Science notebooks

3
Purpose
Use chemical symbols to represent chemical
formulas and equations.
4
If the flavors of Tootsie-Roll Pops represent
different atoms or elements, how many different
combinations can your group create?
5

• In your notebook, draw a picture of each
  combination.
• Which group can find the most combinations within
  3 minutes?

6

• How many different kinds of atoms are represented
  by your Tootsie-Roll Pops?
• How many different combinations did your group
  make?
• Do you think any other group had the same
  combinations as your group did?
• Were there other combinations your group didnt
  think of?

7

• What might this activity suggest about elements?

8

• Draw a picture description of this combination.
• Now write a description of this combination in
  words.

9
Can you think of a better way?

• Drawing pictures or writing out descriptions is
  quite tiresome and time-consuming.
• Lets give each color a symbol.
• You can unwrap your lollipop now!!!

10

• Grape G
• Cherry Ch
• Chocolate Cc
• Orange Or
• Green Gn
• Raspberry -R

11

• Make three different combinations using the
  wrappers and describe them using the color
  symbols.

12
Use symbols to describe the following
combinations

• OrCc
• CcGCh
• GChOrGn

• orange and chocolate
• chocolate, grape, and cherry
• grape, cherry, orange, and green

13

• Sets of symbols like GCh and OrCcG are called
  formulas. Each symbol represents one kind of
  atom.
• If you have more than one of the same kind of
  atom in a formula you place that number after and
  a little below the line to show the number of
  atoms.
• This number is called a subscript.
• Example Or2Cc

14

• Using the wrappers and colored paper squares,
  arrange the atoms in the following
  combinations.
• If there is more than one atom, place the same
  atoms on top of each other, but make sure you
  can count how many there are.

15
3 cherries and 5 chocolates
Now write the formula -
Ch3Cc5
16
1 orange and 2 grapes
OrG2
4 chocolates, 2 greens, 3 cherries
Cc4Gn2Ch3
17
Law of Conservation of Mass

• Matter can neither be created nor destroyed
  during a chemical change.
• The total mass of all substances must be equal to
  the total mass after a chemical change.
• There can be no loss of mass nor gain of mass
  during a chemical change.

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OrCh2 CcG2 ? OrCcG4 CcCh2

• Make the following combinations with your
  wrappers and papers.
• Compare and record the number of atoms on each
  side of the arrow.

_____ Or _____ Or _____ Ch _____ Ch _____
Cc _____ Cc _____ G _____ G
19
CcG OrGn2 ? OrG2 CcGn
Or Ch2 ? Ch2Or
G R2Ch ? RChG R2
20
What needs to be done to have these combinations
of atoms obey the Law of Conservation of Mass?