Matthew was cleaning his car on a very hot summer day. He left the cleaning spray he had bought, and was using, on the driveway in the intense heat and the can exploded. Why did this happen?

When the volume and number of particles of a gas are constant which of the following is also constant

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

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