Question 9(multiple choice worth 4 points) (08.01 lc) what happens to water when it warms above 4 °c? it contracts. it forms ice. its density decreases. its composition changes.

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.