What physical property identify a substance?

a. corrosion
b. density
c. reactivity

Temperature is _related to the average kinetic energy of a gas. inversely directly not disproportionally

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.

May someone me with these science questions