Measuring

Matter

Weight and Mass

A. Weight Weight – measure of the force of gravity on an objectB. Mass Mass – measurement of the amount of matter in the

objectC. Units of Mass International System of Units (SI) – measures the

properties of matter SI unit that measures length - meter SI unit that measures volume - liter SI unit that measures mass - gram

1. Volume Volume – amount of space that matter occupies (takes up)

A. Units of Volume Common units include: liter (L), milliliter (mL), cubic centimeter (cm3)B. Calculating Volume Rectangular Object:

Volume = length x width x height

Irregular Object: Fill a graduated cylinder with water (about halfway). Drop the object in. Subtract the original water level from the new water level to get the volume.

1.Density Density – relates the mass of a material in a

given volume Density = mass ÷ volume

A.Sinking or Floating Objects with a density GREATER than water

SINK Objects with a density LESS than water FLOAT