When using a light microscope, focus the specimen with the scanning objective lens first.
Reasoning:

Which other elements contain the same number of outer electrons as sodium

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.

How does the motion of particles in a gas change as the gas cools