Oil flows upward in the wick of a lantern because of the liquid property called
a. density.
b. meniscusity.
c. viscosity.
d. capillarity.

Iknow the answer is a but i don't know why

In which of these cases are the two wave points considered to be in phase with each other?

1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false