Elements are generally divided into two main groups - metals and nonmetals. Both groups have a number of subgroups. All elements have certain properties. For example, most metals are hard, shiny solids. They are good conductors of both heat and electricity. Metals are also malleable and ductile.

Most nonmetals are gases at room temperature. Solid nonmetals are dull and neither malleable nor ductile. Nonmetals are also poor conductors of heat and electricity.

Some elements have properties of both metals and nonmetals. These elements are called metalloids.

In this Virtual Lab, you will test the properties of mystery elements. You will use what you know about the properties of these elements to identity of the element.

Objectives:

• Compare and contrast the properties of elements.
• Identify elements based on their properties.

Procedure:

1. Click the Video button. Watch the video to find out how substances are tested to determine their properties. Write your observations in the Journal.

2. Select a mystery element. Click and drag the element test tube into a testing box.

3. Select and conduct one of the four available tests on the mystery element.

4. Open the Table and record the result of the test.

5. Continue to test the mystery element and record the results. After each test, use the Journal to hypothesize about the possible identity of the mystery element and to explain your reasoning.

6. Compare the data you collected to information given on the activity screen. Determine the identity of the mystery element and click its name. Use your Journal to summarize the process you used to identify the mystery element.

7. Repeat the activity several times using different mystery elements. Make a generalization in your Journal about the processes you used to identify elements.