Thursday, September 30, 2010

September 29 2010 - Lab 2C Chemical and Physical Change

Today, we did a lab for chemiacal and physical change.

Purpose of this lab is to find out characteristic of chemical and physical changes and to know difference between chemical change and physical change.

Material :

Equipment

4 small test tubes glass square
(10mm x 75mm) lab apron
test-tube rack safety goggles
4 medicine droppers

Chemical Reagents

set of 4 unknown solutions


Procedure :





Experimental Results :





As a result, combination of solution D and A, D and B, and D and C are chemically changed.
These combinations have characteristics of chemical changes that changed color. Also combination of solution B and C is a chemical change due to characteristic of chemical change which is forming new substances.

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