Properties of Matter

How Do we Classify Matter? Physical Chemical Can be determined without in any way changing its identity May be extensive or intensive . Extensive: Depends upon how much of a particular sample you have on hand. Ex: mass, weight, volume Intensive: Does not depend on the size of a sample. Ex: Color, odor, luster Can be determined by its ability to be changed into a new and different substance. Ex: Ability to burn, ability to react with air

Sort the following into Physical (extensive or intensive) or Chemical property Combustibility Mass Malleability Melting point Solubility Conductivity Ductility Ability to rust Boiling point Abiltity to tarnish Denisty Flammability

Check your answers: Mass (extensive) Malleability (intensive) Physical Chemistry Mass (extensive) Malleability (intensive) Melting point (intensive) Solubility (intensive) Ductility (intensive) Boiling point (intensive) Density (intensive) Combustibility Ability to rust Ability to tarnish Flammability

Density Intensive physical property Quantity of matter in a given volume Density=mass/volume D=m/v The density of a solid or liquid is expressed in grams/milliliter (g/ml) The density of a gas is expressed in grams/liter (g/l) Changes in temperature and pressure will affect the density of a gas more than a liquid , more than a solid. (gas laws)

What is the density of 12. 00 ml of sulfuric acid with a mass of 22 What is the density of 12.00 ml of sulfuric acid with a mass of 22.08 grams? Solution: D=m/v D= 22.08 g/12.00 ml D= 1.840 g/ml

A sample of marble has a mass of 41. 2. It’s density is 2 A sample of marble has a mass of 41.2 . It’s density is 2.56 grams/cubic centimeter. What is the volume? Solution: D=m/v 2.56 g/cc=41.2g/V V= 41.2/2.56 V= 16.1 ml

Charcoal has a density of 0. 40 grams/ cubic centimeter Charcoal has a density of 0.40 grams/ cubic centimeter. Calculate the mass of the sample with a volume of 212.8 cubic centimeters. Solution: D=m/v M=D x V M= .40 g/cc x 212.8 cc M= 85 grams

Specific gravity The ratio of density of a substance to that of a standard (usually water) Specific gravity= D substance (g/ml)/D water (g/ml) Specific gravity= Number (no units) D sample > D water (1 g/ml) the sample sinks D sample < D water (1 g/ml) he sample floats

In a cooler which cans would you find on top –diet coke or regular coke?