the smallest unit of a chemical element that can still retain
the properties of that element
atoms
100
unit of energy; the amount of heat needed to raise one gram
of water one degree Celsius at standard atmospheric
pressure
Calorie
100
a physical change that occurs when matter changes to
another state (i.e., liquid, gas, or solid)
Change of State
100
actor being measured or observed in an experiment
Dependent variable
200
rate of change in velocity, usually expressed in meters per second; involves an increase or decrease in speed and/or a change in direction
Acceleration
200
a stable elementary particle that is negatively charged and
orbits the nucleus of an atom
Electron
200
the process of changing from a gas (i.e., water vapor) to a
liquid (i.e., dew); the act of making more dense or compact
Condensation
200
a reaction or a change in a substance produced by
chemical means that results in producing a different
chemical
Chemical changes
200
the factor that is changed in an experiment in order to study
changes in the dependent variable
Independent variable
300
in any periodic function (e.g., a wave) the maximum
absolute variation of the function
Amplitude
300
a substance that cannot be reduced to a simpler substance
by chemical means
Element
300
the transmission of heat through a medium and without the
motion of the medium
Conduction
300
an interconnection of electrical elements forming a
complete path for the flow of current
Circuit
300
a procedure that is carried out and repeated under
controlled conditions in order to discover, demonstrate, or
test a hypothesis; includes all components of the scientific
method
Experiment
400
The peak or highest point on a wave
crest
400
A particle object or system that lacks at net charge
Neutral
400
a fundamental principle stating energy cannot be created
nor destroyed but only changed from one form to another
Conservation of Energy
400
a substance made up of a combination of two or more
elements held together by chemical bonds that cannot be
separated by physical means
What is compound
400
a procedure that is carried out in order to observe a
response caused by a stimulus; not a complete experiment
Investigation
500
the change in direction of a wave caused by passing by an
obstacle or traveling through an opening
Diffraction
500
a subatomic particle having zero charge, found in the
nucleus of an atom
Nuetron
500
heat transfer in a gas or liquid by the circulation of currents
from one region to another
Convection
500
concentration of matter of an object; number of individuals
in the same species that live in a given area; the mass per
unit volume of a substance in a given area
density
500
a set of objects, organisms, or different parts acting to form
a whole