Why do atoms form bonds or why do bonds form?

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

How can you use chemical equations to predict the products of the reaction you can carry out?

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.