When is a pendulum's kinetic energy equal to zero? 1/4 of the way through its swing
1/4 of the way through its swing

at the bottom of its swing
at the bottom of its swing

at the top of its swing
at the top of its swing

1/8 of the way through its swing

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

Enzymes affect the reactions in living cells by changing the

Why can water dissolve many ionic compounds