Labpaq Exp 6

Title: Physical and Chemical Properties
Purpose: The purpose of this experiment is to investigate the physical and chemical properties of pure chemical substances by subjecting them to various environmental extremes.
Procedure: Filled each test tube with substances provided and subjected them to various conditions. These conditions included, heat, cold water, hot water, acid and basic additions and tested on litmus paper. The reactions were observed and documented at each step.
Data tables:
Substance name
Color
Odor
Effect of heat
Cold H2O
Hot H2O
Litmus Test
Dilute HCl
Dilute NaOH
Mg
Small silver, metallic, shards
No smell
Shriveled up and turned white. Produced gas insoluble Boiled fast, some sample floated to top of H2O, and sample jumped around test tube
Red= got damp, turned dark pink
Blue= turned dark blue/purple and light blue/gray where drop hit paper
Became very hot, bubbled, produced gas
No reaction, not soluble
Cu
Bronze metallic balls
No smell
Turned grey and moved around tube insoluble Insoluble, boiled fast, gave off gas
Red= got damp, turned dark pink
Blue= turned dark blue/purple and light blue/gray where drop hit paper
No reaction
No reaction
Zn
Big metallic pieces
No smell
Shriveled and turned grayish
Insoluble
Insoluble, gave off gas
Red= got damp, turned dark pink
Blue= turned dark blue/purple and light blue/gray where drop hit paper
Bubbled and gave off gas
No reaction, insoluble
MgO
White powder
No smell
No reaction
Soluble, turned liquid whitish
Boiled, produced gas, shook tube3
Red= turned blue where the drop hit
Blue= turned dark blue/purple and light blue/gray where drop hit paper
Turned yellowish green and became hot
No reaction, turned milky white liquid
CuCO3
Turquoise color
No smell
Turned to black liquid
No reaction
Produced gas, slightly more soluble
Red= got damp, turned dark pink
Blue= turned dark blue/purple and light blue/gray where drop hit paper
Green liquid,