Choose three physical properties that can be used to identify pure substances. (select all that apply.) melting point degree of ionization heat of combustion boiling point density

Llama have 74 chromosomes how many chromosomes will they be found in their gametes explain how you know

Why do scientists look for patterns in the world? a. patterns can explain observations. b. patterns never change, no matter what. c. patterns are easy for scientists to detect. d. patterns are all the same, through all time.

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.