35 points for this one question and ! : ( click to select the correct answers. click again to unselect answers. leave the incorrect answers unselected. choose all of the examples of balanced forces. a) a chandelier has been hanging in the kitchen for years b) a log floats on top of the lake c) you place your book on the top of a flat table d) your wagon rolls down the hill e) the wind blows and turns the turbines of a windmill.

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

What is the percentage of hydrogen in nitrogen trihydride

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.