Which best describes a mixture?It has a single composition, and it has a set of characteristics that does not change. It can have different compositions, but it has a set of characteristics that does not change. It has a single composition, but it has a set of characteristics that does change. It can have different compositions, and it has a set of characteristics that does change.

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

Which description best characterizes the motion of particles in a solid?