One of the clues that helped you determine the mystery element in "Name that Element!" (pp. 12-14) was the element's high melting point. An element's melting point is the temperature at which it changes from a solid to a liquid. Complete the chart and answer the questions below in complete sentences to learn more about the melting points of a selection of elements from the periodic table. We did the first one for you.
Analyze the Data
1. Which metal has the highest melting point on your chart? Lowest melting point?
2. Which nonmetal has the highest melting point on your chart? Lowest melting point?
3. Ice (solid water) melts at 0[degrees]C (32[degrees]F). Which element on your chart has a melting point nearest to water's melting point?
4. At what temperature (in degrees Celsius) does water boil? Which element has a melting point closest to that temperature?
5. Consider the statement: "Metals always have higher melting points than nonmetals." Use your data to evaluate whether that statement is true or false.
1. Tungsten is the metal with the highest melting point. Mercury is the metal with the lowest melting point.
2. Carbon is the nonmetal with the highest melting point. Helium is the nonmetal with the lowest melting point.
3. Francium is the element with the melting point closest to ice.
4. Water boils at 100[degrees]C (212[degrees]F). Sulfur is the element with the melting point closest to this temperature
5. This statement is false because carbon is a nonmetal and has the highest melting point on the chart. Mercury melts at -39[degrees]C and it is a metal That melting point is lower than that of sulfur and carbon, which are both nonmetals.
Elements and Their Melting Points Melting Point (in Element Element degrees Metal or Name Symbol Celsius Nonmetal? Helium He -272 Nonmetal Hydrogen -259 Neon -249 Oxygen -218 Nitrogen -210 Chlorine -101 Mercury -39 Francium 27 Rubidium 39 Sulfur 113 Silver 962 Gold 1,064 Iron 1,535 Tungsten 3,410 Carbon 3,500 SOURCE: www.webelements.com/periodicity/melting_point
Melting Point (in Element Element degrees Metal or Name Symbol Celsius) Nonmetal? Helium He -272 Nonmetal Hydrogen H -259 Nonmetal Neon Ne -249 Nonmetal Oxygen O -218 Nonmetal Nitrogen N -210 Nonmetal Chlorine Cl -101 Nonmetal Mercury Hg -39 Metal Francium Fr 27 Metal Rubidium Rb 39 Metal Sulfur S 113 Nonmetal Silver A9 962 Metal Gold Au 1,064 Metal Iron Fe 1,535 Metal Tungsten W 3,410 Metal Carbon C 3,500 Nonmetal
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|Title Annotation:||CHART-READING SKILLS; chemical elements|
|Date:||Apr 6, 2009|
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