Which process is endothermic? A) Water condenses on the outside of a cold soda can.

B) The melted wax freezes( Hardens) after a candle is extinguished.

C) Water vapor forms ice crystals in the upper atmosphere.

D) Gasoline spilled on the ground evaporates very quickly.

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

Question 5 match each term to its description. match term definition excess reactant a) reactant that can produce a lesser amount of the product limiting reactant b) reactant that can produce more of the product theoretical yield c) amount of product predicted to be produced by the given reactants