conclusion		Mass per unit volume of a substance.
Constants		A scientific rule that describes the behavior
Contrrol group		An answer to a question based on analyzing data.
Data		Things that the researcher keeps the same.
Density		what the researcher manipulates or changes.
Dependent cariable		An educated guess
Experiment		A test designed to demonstrate the validity of a hypothesis.
Hypothesis		The reseacher observes or measures in the experiments,responding variable.
Independent variable		`the data collected during an experiment
Law		standard of comparison.
Mass		recorded observations and measurements.
Reasult		A well-tested and widely accepted view
theory		The amount of matter in an object.