Properties of Matter
General Properties of Matter
Mass is the amount of matter in an object.
Inertia is the resistance of an object ot changes in its motion.
Weight is the response of mass to the pull of gravity.  Gravity is the force of attraction between objects.
Volume is the amount of space an object takes up.
Density is the mass per unit volume of an object.
The ratio of the mass of a substance to the mass of an equal volume of water is called specific gravity.
Phases of Matter
A physical porperty can be observed without changing the identity of the substance.
A solid has a definite shape and volume.
A liquid has a definite volume but no definite shape.  A liquid takes the shape of its container.
A gas does not have a definite shape or a definite volume.
Phase Changes
A physical change is a change in which physical properties of a substance are altered but the substance remains the same kind of matter.
Phase changes are physical changes.
Temperature does not rise during a phase change.
Chemical Properties and Changes
Chemical properties describe how a substance changes into other new substances.
A chemical change produces a new and different substance.
A chemical reaction produces a new substance with new and different physical and chemical properties.
Matter is never destroyed in a chemical reaction.  The same number of particles still exist.