1. Our Physical and Chemical Change Show By: Mrs
Our Physical and Chemical Change Show By: Mrs. Kapela’s Class Roxbury Elementary

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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

8. 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

9. Tearing a paper
Tearing 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

10. 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

11. 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

12. gas burns and can’t be reversed.
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

13. 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

14. 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

15. Roasting a Marshmallow
Roasting a marshmallow is a chemical change because it’s turning crispy and it’s caramelized sugar.
Joshua

16. 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

17. 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

18. 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

19. 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

20. 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

21. 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

22. 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

23. Boiling Water
This 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

24. 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

25. 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

26. 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