Weegy: best answer: B. density.. When the mass of a material is plotted against volume, the slope of the line is the density of the material.
User: What is the first step in using a balance beam scale?
A. Zero the balance.
B. Record the mass values.
C. Put the mass on the tray.
D. Use the counter weights and dial to balance the scale.
Weegy: The answer is: A. Zero the balance. (More)