Which of the following best explains the distinctive colors of specific elements when used in fireworks?
A
the number of electrons in the atoms
B
electrons moving from an excited energy state to the ground state
С
the number of neutrons in the atoms
D
electrons transferring from one atom to a different atom

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Scientists have developed an explanation of a phenomenon from several verified hypotheses. the explanation has been confirmed through numerous experimental tests. which option best describes this explanation? a. scientific lawb. research questionc. hypothesisd. scientific theory