Which pair of elements is most likely to form an ionic bond?
Select one:
a. nitrogen and oxygen
b. carbon and hydrogen
c. sulfur and oxygen
d. calcium and oxygen

Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system

Select the correct answer how does the heat content of the reaction change in the process of photosynthesis when a glucose molecule is formed? ca the value of is negative the value of qis positive the value of a remains constant the value of a decreases the value of equals zero e

What are transitions between a liquid and gas called? identify which way they are transitioning