Nacl, i2, hcl, kf what kind of bond are they?

What is happening when the water inside a kettle heats up and begins to boil

Which is true according to the law of conservation of energy

The reaction below shows a system in equilibrium. how would a decrease in temperature affect this reaction? a. the rate of formation of the gases would increase. b. the equilibrium of the reaction would shift to the left. c. the equilibrium would shift to cause the gases to sublime into solids. d. the chemicals on the left would quickly form the chemical on the right.