1. QUESTION:
Which of the following is a metalloid? A. Potassium, B. Silicon, C. Iron, D. Helium
SCRIPT:
Which of the following is a metalloid? A. Potassium, B. Silicon, C. Iron, D. Helium
PAUSE The best way to determine the answer to this question is to refer to the periodic table.
CONTINUED ON NEXT SLIDE

2. The metallic elements are shown here highlighted in red.
The nonmetallic elements are highlighted in blue.
And the metalloids are not highlighted.
Here’s potassium…
CLICK
its symbol is K
Here’s silicon…
CLICK its symbol is Si
Here’s iron…
its symbol is Fe
And here’s helium
CLICK its symbol is He
Therefore, the correct answer is silicon.
CLICK HIGHLIGHT answer
PAUSE
END RECORDING

3. QUESTION:
Which of the following is a metalloid? A. Potassium, B. Silicon, C. Iron, D. Helium

4. Video ID: © 2008, Project VALUE (Video Assessment Library for Undergraduate Education), Department of Physical Sciences Nicholls State University Author: Glenn V. Lo Narrator: Funded by Louisiana Board of Regents Contract No. LA-DL-SELECT-13-07/08