Why are noble gases nonreactive? A
Their melting points are too high to react.
B
They have 8 valence electrons making them inert, so they do not react.
C
They have 8 valence electrons, making them too dense to react.
D
They have 18 valence electrons, making them over expanded, so they cannot react.

Used the balanced equation 2h2+ o2 - -> 2h2o. if you have 7.2 grams of o2 , how many grams of h2o can you produce ?

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.