our physical and chemical change show by: mrs. kapelas class roxbury elementary
TRANSCRIPT
Our Physical and Chemical Change Show
By: Mrs. Kapela’s ClassRoxbury Elementary
Melting Ice Cubes
Melting ice cubes is a physical change because it does not make anything new and it is still basically the same thing, it is just a change in state from solid to liquid. You can change the water back to ice by
taking the heat away from the water. If you can
change the state back it is a physical change. That is why melting ice cubes is a
physical change.
Adrienne
Burning a Log
The picture of a burning log is an example of a
chemical change. I know this because when the log
is fully burnt it will be ashes which is new stuff. Also you can’t reverse the
change and take the ashes of the log and
reform the log. That is not possible. With a physical change you might be able
to reverse the change.
Bryn
Roasting a Marshmallow
Roasting a marshmallow is a chemical change
because when you put the marshmallow in the fire it creates something new. The
new thing is the caramelized sugar. That is why it is a chemical change.
Emma
Melting Ice Cubes
Melting ice cubes is a example of a physical
because the ice cubes were a solid but now it
turned to a liquid and it’s a physical change because
it hasn’t changed. Because its still a an ice cube it hasn’t changed texture, size or state of
matter.
Cassidy
Fire place
A fire place is a chemical change
because when you burn a log it changes
state in color and texture and turns into ashes and ashes are black it is a different kind of texture.
Eric
Tearing a Paper
This experiment is a Physical Change
because if you rip the paper it’s still is paper, you just changed the size and shape of it.
Also a Physical Change ONLY
changes the size, shape, color, texture,
or state of matter.
Gurveen
Chopping wood
This is a physical change because the wood is still
wood, but smaller. In this case it is
not reversible but the chemicals are still the same as the big piece.
Jack
Tearing a paperTearing paper is a physical change
because after you tear it, it will still be paper. You are only changing the size or
shape. Even though it does not change color or texture, it ‘s still a
physical change.
Jaewook
Rusting Cars
Rusting cars is a chemical change because the new thing is iron oxide (rust). A chemical
change is when the substance’s
molecules rearrange themselves and make a new substance such
as rust.
Jasen
Melting Ice Cubes
This is a physical change because
ice is H2O (water). Ice is water
because when it’s frozen it is
still H2O. When it melts it is still
H2O.
Dwayne
Burning fuel
Do you know why fueling is a
chemical change? The car burns the gas and use it as
energy. The gas burns and
can’t be reversed.
Joseph
Folding paper
If You fold a piece of paper it will be a physical change
because the paper will still be paper. the
chemicals don’t change or react because there is
now new chemicals being added or
taken.
Ben
Chopping wood
This is a physical change! When chopping wood
it changes the size and shape.
It is still wood. there is no new stuff involved.
Joseph
Roasting a Marshmallow
Roasting a marshmallow is
a chemical change because
it’s turning crispy and it’s caramelized
sugar.
Joshua
Tearing Paper
When you tear paper do you think it is a physical change?
Yes! You’re right. The only thing that
changes is size and shape. It is a physical change because it’s
still paper.
Hanna
Vinegar and Baking Soda
Baking soda and vinegar is a example of a chemical change. I know I’m correct
because if you pour the vinegar in the baking soda, there will be a
reaction between them and you won’t be able to
reverse it. I also know that I’m correct because it
adds a new chemical. In this case, the new chemical is carbon
dioxide.
Mackenzie
Crumpled Paper
A crumpled piece of paper is an example of a
physical change because it changes shape. If it only
changes shape it is a physical change because a physical change occurs
when the color, shape, size, texture or state of
matter changes its form.
Madhavi
Ice Cubes Melting
When ice is melting it is a physical change
because you just change the state of
matter from a solid to a liquid. A physical
change is the shape, size, color, texture or
state of matter.
Morgan
Rusting cars
A rusting car is an example of a
chemical change because the car
has a new chemical on it. the new chemical is
iron oxide!It’s not reversible.
Nicole
Rotting Apples
This is a chemical change because there
is something new made; mold, and the chemical makeup of the apple is different so the change isn’t
reversible making it a chemical change. `
Pranav
Ice Cubes Melting
Ice cubes melting is a
physical change because it is still water, the state
of matter changes a solid to a liquid, no
new stuff forms.Selin
Boiling WaterThis picture of boiling
water is an example of a physical change because, one: any change in state is a
physical change, and two: the change can be reversed by taking heat out of the water vapor from the boiling water
and make it water again.
Shivani
Burning a Log
Burning a log is a
chemical change. It is a chemical change because when you burn a
log it changes into ashes which is a
new thing.
Tyrone
Vinegar and Baking Soda
Mixing baking soda and vinegar is an example of a chemical change
because when you mix them together
you get a new substance, carbon
dioxide.
Angel
Slicing Bread
Slicing bread is a physical change because it only changed in size not chemicals. If
it’s a physical change it changes
state of matter, color, size, shape,
or texture.
Arnold