Physical and Chemical Changes
By Jesse
Physical Changes
A physical change is when something breaks or appearance changes but is still the same thing and can be put back together.
Chemical Changes
Chemical changes take place in matter and it is irreversible which means it can't be undone.
Some examples of physical and chemical changes
Physical change #1
This is a physical change because it is still a dollar but changed shape.
Physical Change #2
Do you know why this is a physical change? Well, it is a physical change becuase it changed size but is still water.
Physical Change #3
This is one last example of a physical change. This time the object changed appearance which is a property of a physical change.
Chemical Change #1
This has a lot of reasons why this is a chemical change. There's light and heat which are two properties of a chemical change were produced. It also had a chemcial reaction.
Chemical Change #2
Chemical changes are also when something can't be returned to its orginal form which i the cause here for being a chemical change.
Chemical Change #3
It changed from cookie dough to a cookie which is a chemical change because it changed completely different.