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## PowerPoint Slideshow about ' Tootsie Pop Chemistry' - patience-best

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Presentation Transcript

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

Purpose

Use chemical symbols to represent chemical formulas and equations.

If the flavors of Tootsie-Roll Pops represent different atoms or elements, how many different combinations can your group create?

In your notebook, draw a picture of each combination.

- Which group can find the most combinations within 3 minutes?

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 didn’t think of?

Draw a picture description of this combination.

- Now write a description of this combination in words.

Can you think of a better way?

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

Grape – G

- Cherry – Ch
- Chocolate – Cc
- Orange – Or
- Green – Gn
- Raspberry -R

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

Use symbols to describe the following combinations:

- orange and chocolate
- chocolate, grape, and cherry
- grape, cherry, orange, and green

- OrCc
- CcGCh
- GChOrGn

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

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.

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.

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

What needs to be done to have these combinations of atoms obey the Law of Conservation of Mass?

Stay tuned…….

Tomorrow we will use coefficients to balance these equations!!

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