Glass breaking:

Physical Change or Chemical Change?

• Physical Change

• Chemical Change

Which form or forms of evidence prove this is a chemical change?

• production of gas

• color change

• formation of precipitate

• energy change

• none; it's a physical change

Hammering a nail:

Physical Change or Chemical Change?

• Physical Change

• Chemical Change

Which form or forms of evidence prove this is a chemical change?

• production of gas

• color change

• formation of precipitate

• energy change

• none; it's a physical change

Bicycle chain rusting:

Physical Change or Chemical Change?

• Physical Change

• Chemical Change

Which form or forms of evidence prove this is a chemical change?

• production of gas

• color change

• formation of precipitate

• energy change

• none; it's a physical change

Melting iron:

Physical Change or Chemical Change?

• Physical Change

• Chemical Change

Which form or forms of evidence prove this is a chemical change?

• production of gas

• color change

• formation of precipitate

• energy change

• none; it's a physical change

Separating a mixture of sulfur and iron using a magnet:

Physical Change or Chemical Change?

• Physical Change

• Chemical Change

Which form or forms of evidence prove this is a chemical change?

• production of gas

• color change

• formation of precipitate

• energy change

• none; it's a physical change