1.is the temperature at which the solid-liquid phases change occurs
2.is the amount of the mass it had per unit volume.normally this is measured in g cm-3 and at room temperature
3.what is the state that if a chemical elements are listed in order of increasing atomic number,many of their properties go through cyclical changes,with elements of similar properties recurring at intervals
4.is a highly reactive element that is very abundant on earth and in the human body
5.proposed a periodic system of element that was based not only in atomic weight
2.is the amount of the mass it had per unit volume.normally this is measured in g cm-3 and at room temperature
3.what is the state that if a chemical elements are listed in order of increasing atomic number,many of their properties go through cyclical changes,with elements of similar properties recurring at intervals
4.is a highly reactive element that is very abundant on earth and in the human body
5.proposed a periodic system of element that was based not only in atomic weight
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Answer:
1.melting point
-the melting point of element is the temperature at which the solid-liquid phase change occur
2.Density
-the density of an element is the amount of mass itbhas per unit volume.Normally this is measured in kg/m3 at room temperature
3.period trends or periodic law
-the periodic trends are base on the periodic law,which states that if the chemical elements are listed in order
4.oxygen
-is a highly reactive element that is very abundant on earth and in the human body
5.Mendeleev
-proposed a periodic system of element that was based not only in atomic weight
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Answer
1.Phase Change
2.Density
3.Periodic Trends
4.Oxygen
5.Mendeleev used atomic mass instead of atomic number