Physical Changes:

1) Ripping Paper

I ripped last week's study guide. It changed shape. It's chemicals stayed the same, so this was a physical change.

 

2) Putting glass in the freezer

I put glass in the freezer. It cracked, and changed color. This didn't affect the chemicals of the glass, so this was a physical change.

 

3) Punching a book

I punched a blue book which was boring and bad. There were two changes caused by pressure. One was the shape of the book, and the second one was the color of my hand. This was a physical change, because only the shape of the book changed, nothing happened to its chemicals.

 

Chemical Changes:

1) Baking cookies

I baked cookies, and the cookies got baked. The chemicals in the cookies changed, so this was a chemical change.

 

2) Burning wood

I burned wood, and at the end, the wood burned into ashes. The chemicals of the wood changed, so this was a chemical change.

 

3) Spraying deodorant on fire

I burned some more wood, and sprayed deodorant on the fire. When I did that, flames got everywhere. This was a chemical change, because its chemicals changed.

 

Yamac Sunkar