1. Plan Your Investigation-Metals, Nonmetals and metalloids
Lab Book page 26-30

2. My Question of Inquiry:
1.How does the classification of elements base on physical properties (luster, malleability, conductivity) relate to where the elements are positioned on the periodic table.

3. 2. The Hypothesis
If physical properties can be determined for an element, then the element can be classified as a metal, nonmetal or metalloid.

4. 3. What is the independent variable?
We are testing the Properties of each element (luster, malleability, conductivity)

5. 4. What is the dependent variable?
The dependent variable is the classification of each element: metal, nonmetal or metalloid.

6. 5. Is there a control group?
No, because this is a comparative investigation.

7. 6. What materials, tech, and equipment will be needed?
9 volt battery
Circuit tester (conductivity)
Hammer(malleability)
Flashlight (luster-metallic(shiny or nonmetallic(dull)
Various elements to test

8. 7. What are the safety precautions?
Goggles
One person will handle sulfur-gloves
Aprons
(wash hands if needed)
Work kindly and politely with others

9. 8. See handout for lab procedures

10. Part II-collect, record and organize data-page 27

11. Page 27-Continued-Your Table should look like this:
Should be green

12. Page 28
Qt 1-Describe the location of the elements that you classified as metals on the Periodic Table
Ans: Metals ar located on the LEFT side of the table (left side of the stair-step line)
Qt. 2-Describe the location of the elements that you classified as nonmetals on the Periodic Table
Ans: Nonmetals are located on the right side of the table(right of stair-step line). With one exception—the exception is Hydrogen

13. Page 28-continued
Qt 3:Describe the location of the elements that you classified as metalloids on the Periodic Table
Ans: Metalloids are located next to the stair-step line
Qt. 4: Your table should reflect all elements color coded as metals, nonmetals or metalloids. Use your planner to help guide you for the metalloids

14. Page 28-Continued Tellurium-metalloid Oxygen-nonmetal Titanium-metal
Neon-nonmetal
Lithium-metal
Gold-metal

15. Page 29 Analyze Data Magnesium-metal Germanium-metalloid
Phosphorus-nonmetal
Argon-nonmetal
Arsenic-metalloid
Potassium-metal

16. Page 29-Question
Qt. 7- How did the physical properties of the samples help you with classification?
By testing the different elements, we can tell which classification the elements should be in for example-metals conduct electricity, are malleable and are metallic, nonmetals are dull and do not conduct electricity and are brittle, metalloids can have metal like or non metal like properties but will only semi conduct electricity.
Qt. 8 Can you use physical properties to tell the different metals apart from each other?
Yes, Some metals are more or less malleable or shiny than the others

17. Page 29
Qt. 9-Some of the non-metals are gases and liquids. Do you think you could use the same physical properties to tell them from metals?
Ans: No you cannot test the malleability of a liquid or luster of a gas. You would have to use other means
Qt. 10-What is one of the best ways to tell a metal from a nonmetal?
Ans. Conductivity is the best way

18. Page 29
Qt. 11 Is it possible to tell if an element is a metal, nonmetal or metalloid by observing if its shiny?
Ans.- No, because some metalloids are also metallic so it would be hard to tell the two apart by just using luster.