Title: Chemical Properties of Metals

Purpose:

• to observe and describe the effects of acids, bases, and water on representative metals
• to record observations in a data chart

Materials:

Procedure:

1. Read directions carefully prior to starting
2. Put on safety goggles
3. Prepare data charts (you will need 5 charts, labeled 0, 5, 10, 15, 20 minutes) (see below)
4. Place one pellet or piece of metal in well plate according to diagram
5. Add 1~2 droppers of water, acid, or base to well
6. Record immediate reaction/lack of reaction (bubbles, color change, .......etc.). This is 0 minutes.
7. Record changes at 5 minute intervals for 20 minutes

Results:

• This will consist of the 5 data charts, completely filled in!
• No change is a valid observation
  

Discussion:

1. Summarize what you did
2. Discuss the reactivity of each metal to H₂O,HCl, HNO₃, NaOH
   • (example: aluminum does not show any changes in .....but produces many bubbles after 20 minutes in.....)
   • Be specific about the metals, acids or bases, and types of changes. The easiest way to discuss the results is to organize by type of metal. You may do the discussion in list format
3. Was this a quantitative or qualitative activity? Explain
4. Describe possible sources of error (remember, errors are not mistakes!)
5. Comment on the significance or importance of your results for the metal industry.

Conclusion:

• (A one sentence testable statement that follows from your results, what you did, what you observed)
• For this activity use the following format: (note, you should have 6 sentences in your conclusion...do in a list!)

  ...............reacts with ................
  

Reflection:

• (A personal statement about the activity, whether it relates to "real life," whether you liked it, suggested improvements.....)

Sample Data Chart

Data Charts to Copy

• Chemistry Text Book Chapters 8 (p. 202) and Chapter 24 (p. 704)
• 10 Signs of Chemical Change (http://antoine.fsu.umd.edu/chem/senese/101/reactions/symptoms.shtml)
• Metals (http://www.bartleby.com/65/me/metal.html)
• Aluminum Fact Sheet (http://www.speclab.com/elements/aluminum.htm)
• Aluminum (http://www.bartleby.com/65/al/alumin.html)
• Carbon (http://www.lbl.gov/MicroWorlds/MaterialWorld/)
• Carbon Fact Sheet (http://www.speclab.com/elements/carbon.htm)
• Carbon (http://www.bartleby.com/65/ca/carbon.html)
• Copper Fact Sheet (http://www.speclab.com/elements/copper.htm)
• Copper (http://www.bartleby.com/65/co/copper.html)
• Lead Fact Sheet (http://www.speclab.com/elements/lead.htm)
• Lead (http://www.bartleby.com/65/le/lead.html)
• Magnesium Fact Sheet (http://www.speclab.com/elements/magnesium.htm)
• Magnesium (http://www.bartleby.com/65/ma/magnesiu.html)
• Nickel Fact Sheet ( http://www.speclab.com/elements/nickel.htm)
• Nickel (http://www.bartleby.com/65/ni/nickel.html)
• Zinc Fact Sheet (http://www.speclab.com/elements/zinc.htm)
• Zinc (http://www.bartleby.com/65/zi/zinc.html)
• Basics of Acids and Bases (http://www.visionlearning.com/library/science/chemistry-2/CHE2.2-acid_base.htm)
• Hydrochloric acid (http://www.bartleby.com/65/hy/hydrogn-ch.html)
• Nitric acid (http://www.bartleby.com/65/ni/nitricac.html)
• Sodium hydroxide (http://www.bartleby.com/65/so/sodmhydx.html)
• Lye (aka NaOH) (http://www.bartleby.com/65/ly/lye.html)
• Water (http://www.bartleby.com/65/wa/water.html
• WebElements ( http://www.webelements.com)
• Chemicool ( http://www.chemicool.com)
• Los Alamos Periodic Table (http://pearl1.lanl.gov/periodic/)
• Chemical Elements (http://www.chemicalelements.com/)