Chemical Properties and Physical PropertiesWHAT’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?