Two different liquids are mixed together. Which observation indicates that an exothermic chemical reaction has taken place? an increase in volume
a decrease in volume
a rise in temperature
a drop in temperature

What does a particular point on a line of a phase diagram represent? o a. the maximum temperature a substance can exist at without bonds breaking b. the pressure created by the kinetic energy of molecules at a particular temperature c. the melting point or boiling point of a substance at a specific pressure d. the conditions in which temperature and pressure have equal effects on a substance

What does the process of natural selection involve

If c + di is a point on the circle, then | c + di |=