research paper

Topics: Chlorine, Chemistry, Sodium Pages: 11 (4158 words) Published: October 30, 2014

Physical and Chemical Properties
Peter Jeschofnig, Ph.D.
Version 42-0188-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor. Solubility or Reaction

Substance
Name Color Odor Effect
of Heat Cold
H2O Hot
H2O Litmus
Test Dilute
HCl Dilute
NaOH
Mg Silver None None None None Cu Zn MgO CuCO3 Cu(NO3)2 NaCl Questions Did you observe any chemical changes in this experiment?

What evidence did you use to decide that something was a chemical change? Give at least two examples of chemical changes you observed. Classify the following properties of sodium metal as physical or chemical: • Silver metallic color:

• Turns gray in air:
• Melts at 98oC:
• Reacts explosively with chlorine gas:
Classify the following changes as physical or chemical:
• Water freezes at 0oC:
• Baking soda when combined with vinegar produces bubbles: • Mothballs gradually disappear at room temperature:
• Ice cubes in a freezer get smaller with time:
• Baking soda loses mass as it is heated:
• Tarnishing of silver:
How would you show that dissolving table salt is a physical change? Cleanup: Mix the leftover sodium hydroxide and hydrochloric acid in your beaker. This will neutralize them. Now, pour them down the drain with lots of water. Place the small amount of solid chemicals left (if any) in a small plastic bag and put it in the trash. After the burner fuel has completely cooled, screw the cap on tightly and store it in your LabPaq. Physical and Chemical Properties

Peter Jeschofnig, Ph.D.
Version 42-0188-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor. Solubility or Reaction

Substance
Name Color Odor Effect
of Heat Cold
H2O Hot
H2O Litmus
Test Dilute
HCl Dilute
NaOH
Mg Silver None None None None Cu Zn MgO CuCO3 Cu(NO3)2 NaCl Questions Did you observe any chemical changes in this experiment?

What evidence did you use to decide that something was a chemical change? Give at least two examples of chemical changes you observed. Classify the following properties of sodium metal as physical or chemical: • Silver metallic color:

• Turns gray in air:
• Melts at 98oC:
• Reacts explosively with chlorine gas:
Classify the following changes as physical or chemical:
• Water freezes at 0oC:
• Baking soda when combined with vinegar produces bubbles: • Mothballs gradually disappear at room temperature:
• Ice cubes in a freezer get smaller with time:
• Baking soda loses mass as it is heated:
• Tarnishing of silver:
How would you show that dissolving table salt is a physical change? Cleanup: Mix the leftover sodium hydroxide and...
Continue Reading

Please join StudyMode to read the full document

You May Also Find These Documents Helpful

  • Paper Chromatography Lab
  • Manual for Writing Term Papers, Thesis
  • Beginner: Paper and Good Research Point
  • PSY 315 Research Statistics and Psychology Paper
  • General Paper
  • Enzymes and Paper
  • SOC 203 Week 3 Assignment Research Paper Preparation
  • School Papers

Become a StudyMode Member

Sign Up - It's Free
Watch now | IMDb: 7 148 S1E16 Three Days | Higher education