Download Don`t Change - Dr. Lodge McCammon

Don’t Change
Topic: Changes in Matter
(middle/high school chemistry)
by Lodge
Don’t Change
If you follow the law...no mass will be destroyed
Things will just change...nothing added oh boy
Such are Physical changes like state or form
Or chemical ones we’ve never seen before
Like how rust comes from iron ore
Chorus:
Don’t change your chemical properties
Though the world will conserve mass and energy properly
Change your physical properties
I know it takes a change in energy...
A change requires energy
Ice in my left hand, yeah its got to melt,
Endothermic takes heat form something else
Now exothermic is like a tiny fire
Giving off heat, come on don’t make me a liar
It’s the water to ice that I admire
Get ya some kinetic...particles in constant motion
Talk about potential...releasing energy when bonds are broken...
Electromagnetic – invisible waves and sunlight that keep going...
Helps photosynthesis keep things growing
If you follow the law, no energy will be lost
Electrical electrons - just moving across
Got a steaming cup of coffee in my right hand
The temperature’s hot...thermal energy adds
All the cups together...made from the can
Student Lyric Guide
Name: ____________________________
Changes in Matter
Don’t Change
If you follow the law…no mass will be destroyed
Things will just change…nothing added, oh boy
Define Law of Conservation of Mass – _____________________________________________
_____________________________________________________________________________
H
H
Methane
Molecule
O
+
C
H
O
O
H
O
O
O
C
2 Oxygen
Molecules
H
O
Heat
O
Carbon Dioxide
Molecule
H
H
H
2 Water
Molecules
Total Hydrogen Atoms = _______
Total Hydrogen Atoms = _______
Total Carbon Atoms = _______
Total Carbon Atoms = _______
Total Oxygen Atoms = ________
Total Oxygen Atoms = ________
Such are Physical changes like state or form
Define physical property: ___________________________________________________________
________________________________________________________________________________
Example of a change in state: ________________________________________________________
Example of a change in form: _______________________________________________________
________________________________________________________________________________
Or chemical ones we’ve never seen before
Define chemical properties: _________________________________________________________
_________________________________________________________________________________
Like how rust comes from iron ore
____________________ is required for iron to produce rust.
Why don’t cars rust while they are sitting out in the parking lot?
The scientific name for rust is______________________________
Don’t change your chemical properties
What would happen if our chemical properties changed?
Though the world will conserve mass and energy properly
If you did change your chemical properties would mass or energy be destroyed? Why or why not?
Change your physical properties
What are your physical properties and which of them can change?
I know it takes a change in energy…
A change requires energy
What type of energy is required to change skin color?
Ice in my left hand, yeah its got to melt,
Why does ice melt if it’s in your hand?
Endothermic takes heat form something else
Define Endothermic: _______________________________________________________________
Why is ice in your hand considered an endothermic change?
Now exothermic is like a tiny fire
Define and exothermic change: ______________________________________________________
Giving off heat, come on don’t make me a liar
It’s the water to ice that I admire
Examples of exothermic chemical and physical changes: __________________________________
_________________________________________________________________________________
Get ya some kinetic…particles in constant motion
Define kinetic energy: ______________________________________________________________
Talk about potential…releasing energy when bonds are broken…
Define potential energy: ____________________________________________________________
Electromagnetic – invisible waves and sunlight that keep going…
Define Electromagnetic energy: ______________________________________________________
______________________ is an example of electromagnetic energy.
Helps photosynthesis keep things growing
How are photosynthesis and electromagnetic energy connected?
Write down the equation for photosynthesis __________________________________________
Which part of the equation requires sunlight and why?
If you follow the law, no energy will be lost
Define Law of Conservation of Energy: ________________________________________________
_________________________________________________________________________________
Electrical electrons - just moving across
Define electrical energy: ____________________________________________________________
Complete the diagram below to illustrate sharing of electrons in a salt molecule:
Na
Cl
Got a steaming cup of coffee in my right hand
The temperature’s hot…thermal energy adds
All the cups together…made from the can
Define thermal energy: _____________________________________________________________
Which of the following has more thermal energy and why? ________________________________
_________________________________________________________________________________
A.
1 cup:
100ºF
B.
6 cups:
100ºF
Teacher Key
Name: __________KEY__________________
Don’t Change
If you follow the law…no mass will be destroyed
Things will just change…nothing added, oh boy
- Define Law of Conservation of Mass – matter is never created or destroyed in any physical or
chemical change. Often called the law of conservation of matter
H
H
Methane
Molecule
O
+
C
H
O
O
H
O
O
O
C
2 Oxygen
Molecules
H
O
Heat
O
Carbon Dioxide
Molecule
H
H
H
2 Water
Molecules
Total Hydrogen Atoms = _______ 4
Total Hydrogen Atoms = _______ 4
Total Carbon Atoms = _______ 1
Total Carbon Atoms = _______ 1
Total Oxygen Atoms = ________ 4
Total Oxygen Atoms = ________ 4
Such are Physical changes like state or form
Define physical property: characteristic of a pure substance that can be observed without changing
it into another substance. Color, luster, hardness, texture.
State: solid liquid or gas
Form: Shape
Example of a change in state: Water to ice
Example of a change in form: crushing an empty coke can, metal slinky.
Or chemical ones we’ve never seen before
Define chemical properties: the potential that a substance has to create other substances through a
chemical reaction.
Like how rust comes from iron ore
____________________ is required for iron to produce rust. Oxygen.
Why don’t cars rust while they are sitting out in the parking lot? Paint protects the metal
(iron)…when paint comes off…rust forms.
The scientific name for rust is_________________________ iron oxide.
Don’t change your chemical properties
What would happen if our chemical properties changed? The way you react with the world would
change. For example: if students were not smelly after gym class, they would have more friends.
Though the world will conserve mass and energy properly
If you did change your chemical properties would mass or energy be destroyed? Why or why not?
No mass or energy is destroyed when chemical or physical changes take place.
Change your physical properties
What are your physical properties and which of them can change? Skin color, hair color, presence
or absence of hair, size, shape, etc…
I know it takes a change in energy…
A change requires energy
What type of energy is required to change skin color?
Skin color can change…but it requires electromagnetic (sunlight) energy to change.
Ice in my left hand, yeah its got to melt,
Why does ice melt if it’s in your hand? It is absorbing the heat from your hand.
Endothermic takes heat form something else
Define Endothermic: A change in which energy is absorbed.
Why is ice in your hand considered an endothermic change? Ice requires heat from another source
(absorption of heat) to change.
LAB: Show an endothermic change  Alka seltzer in water.
Now exothermic’s like a tiny fire
Define and exothermic change: Change in matter that releases heat energy
Giving off heat, come on don’t make me a liar
It’s the water to ice that I admire
Examples of exothermic chemical and physical changes: Fire giving off heat (chemical), ice melting
to water (physical)
Get ya some kinetic…particles in constant motion
Define kinetic energy: energy of matter in motion
Talk about potential…releasing energy when bonds are broken…
Define potential energy: energy an object has due to it’s position
Electromagnetic – invisible waves and sunlight that keep going…
Define Electromagnetic energy: energy that travels through space as invisible waves
_________________ (sunlight) is an example of electromagnetic energy.
Helps photosynthesis keep things growing
How are photosynthesis and electromagnetic energy connected?
Electromagnetic energy (sunlight) is required for photosynthesis to occur.
Write down the equation for photosynthesis __________________________________________
Carbon dioxide plus water  oxygen and sugar
Which part of the equation requires sunlight? The left side of the equation (reactants) because
without sunlight, no chemical reaction will occur.
If you follow the law, no energy will be lost
Define Law of Conservation of Energy: When there is a physical or chemical change the uses
energy, there is no energy created or lost.
Electrical electrons - just moving across
Define electrical energy: Electrons (charged particles) moving from one place to another
Complete the diagram below to illustrate sharing of electrons in a salt molecule:
Na
Cl
Got a steaming cup of coffee in my right hand
The temperature’s hot…thermal energy adds
All the cups together…made from the can
Define thermal energy: total energy of all the particles in an object.
Which of the following has more thermal energy and why? B. There are more particles in the 6 cups
than there are in the single cup.
A.
1 cup:
100
degrees
B.
6 cups:
100
degrees
Music Video Extension Activity
1. Hand out or project the lyrics and read them out loud and discuss their meaning
2. Play the song for the students, multiple times, encouraging them to sing along
3. Use the student lyric guide in place of, or to supplement class notes
4. Allow students class time, in small groups, to “act” out a portion of the song
5. Film the student groups singing/acting out the song