Chemical Properties and Physical Properties WHAT’S THE DIFFERENCE????

Review on Physical Properties  A physical property is a characteristic of a pure substance that can be observed without changing that substance into another different substance.  Hardness  Color  Texture  Dissolvability  Often a physical property can be used to classify matter...like metals have a luster or may have the ability to conduct heat and electricity.

Review on Chemical Properties  A chemical property is a characteristic of a pure substance that describes its ability to CHANGE into a completely different substance. This chemical property can often be used to classify substances just like a physical property.  Remember—it describes an ability to CHANGE into a different substance. Think of iron reacting with water and air. That equals a pile of rust. Most of the time you cannot put the changed substance back the way it started out either!!

Bubbling Blobs Lab Review  Think back to when you put the oil and water together. Was that a chemical change?  NO!  What happened when you put the colored pill into the water? Was there a chemical change there?  YUP! The fizzing of the tablet released CO2 as a gas and released the colored dye. We cannot get the CO2 back but we could get the dye back by evaporating the water and the dye would remain as a dry powder in the bottom of the glass. You have both things going on here.

Bubbling Blobs

Lets make a list of the chemical and physical properties of bubbling blobs:  Chemical Physical

So we can conclude that bubbling blobs had both types of changes.  What about our GAK?  Elmer’s glue and Borax laundry booster

Particles in Motion?  What were the changes going on in this lab? What about temperature?