Class Blog 9/9/13

Notes: 

1. Intensive Properties:

Do not depend on how much you have. (Ex: density, solubility)

Depends on what the substance is.

2. Extensive Properties:

Depend on how much you have, not on what the substance is. (Ex: mass, volume)

Density (intensive) = Mass (extensive)/ Volume (extensive)

Density is a physical property. It can be used to identify what a substance is.

We will not measure density directly. We will measure two things:

1. Mass:

Find using a balance.

2. Volume:

Find two ways:

A. Regular object, use l x w x h. 

B. Irregular object, use displacement.

Displacement:

ending volume-starting volume= volume of object.

Pre Lab Questions:

1) Three significant figures

2) 1.52 g/mL

3) 13.24%

Homework:

1. Complete Web Assigns

2. Read Beverage Density labs

Next scribe: Marlye Jerva