What is the heat of solution? a. the amount of heat released when a vapor changes into a liquid b. the amount of heat required to change a vapor into a liquid c. the amount of heat required to change a solid into a liquid d. the amount of heat absorbed or released when a solid dissolves

Which of the following is a compound? a. carbon b. oxygen c. hydrogen d. water

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

Which type of precipitation would most likely form when the surface air temperature is slightly below freezing and the air temperature increases as you move upward away from the ground?