Density, Buoyancy and Equilibrium

______________________ - Measure of the compactness of different kinds of matter

• Density

• Volume

• Mass

• Temperature

______________________ - The ability or tendency to float in a fluid.

• Buoyancy

• Viscosity

• Density

• Solubility

A steel ball is placed into water. What will happen to it?

• It will sink to the bottom.

• It will float on the surface.

• It will dissolve in water.

• It will bounce on the surface.

Cargo ships float and a steel ball sinks because:

• Cargo ships displace more water while a steel ball is denser than water.

• Cargo ships are made of lighter materials than steel balls.

• Steel balls are heavier than cargo ships.

• Cargo ships have engines that keep them afloat.

Ice or water has tighter packed atoms and is more dense.

• Water has tighter packed atoms and is more dense.

• Ice has tighter packed atoms and is more dense.

• Both have the same density and atomic packing.

• Neither has tightly packed atoms or high density.

Density is dependent on ____________

• How much mass the atoms have; How closely packed the atoms are, and temperature

• How much energy the atoms have; How loosely connected the atoms are, and temperature

• How much charge the atoms have; How randomly arranged the atoms are, and temperature

• How much volume the atoms have; How far apart the atoms are, and temperature

Changing the amount of substance _______________ _________

• does not change density

• increases the density

• decreases the density

• changes the color

1. Changing the mass of a substance _______________ change the density.

• does not

• always

• sometimes

• will

Changing the shape of a substance _______________ ____________ change the density.

• does not

• always

• sometimes

• can

If two objects have the same mass the denser one will be _________________

• smaller

• larger

• lighter

• heavier