We found out the trends by graphing and finding out what we noticed was a trend.
Here is what we found:
Density: the degree of compactness of a substance. As the atomic number increases, so does the density.
Melting Point: The temperature at which a given solid will melt.
Boiling Point: The temperature at which a liquid boils and turns to vapor
Melting points decrease as you move down a group, and increase as you move across a period.
Ionization Energy: The energy required to remove the outermost electron in the atom. It increases as you move across a period, and decreases as you move down a group.
Electronegativity: The tendency of an atom to attract electrons in the formation of anionic bonds. Elements become less electronegative as you move down a group, and more electronegative when you move across a period.
Atomic Radius: Measure of the size of its atoms, usually the mean or typical distance from the nucleus to the boundary of the surrounding electrons. This decreases as you move across a period, and increases as you move down a group.
Next class we focused on elaborating on these trends so stay tuned!
Also, Ms. Chen showed us this great website http://www.ptable.com/ where you can play around with the trends and find out some new trends! I know I will be using it to study!
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