the smallest unit of a chemical element that can still retain
the properties of that element
What is an atom
100
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
What is condensation
100
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
What is density
100
a set of objects, organisms, or different parts acting to form
a whole
What is a system
200
a quality that tends to produce movement or acceleration of
a body in the direction of its application; a push or a pull
What is force
200
a substance that cannot be reduced to a simpler substance
by chemical means
What is an element
200
the process in which a liquid is converted to its vapor
phase by heating the liquid
What is evaporation
200
the product of a thorough blending of two or more
substances, not chemically combined
What is a mixture
200
a plan of inquiry that uses science process skills as a tool to
gather, organize, analyze, and communicate information
What is scientific method
300
amount of distance traveled divided by time taken; the
time-rate at which any physical process takes place
What is speed
300
a subatomic particle having zero charge, found in the
nucleus of an atom
What is a nuetron
300
emission of energy in the form of rays or waves
What is radiation
300
the force exerted per unit area
What is pressure
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
What is an experiment
400
the time-rate at which a body changes its position; defined
as displacement divided by the time of travel
What is velocity
400
a subatomic particle having a positive charge and which is
found in the nucleus of an atom
What is a proton
400
heat transfer in a gas or liquid by the circulation of currents
from one region to another
What is convection
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 a compund
400
a procedure that is carried out in order to observe a
response caused by a stimulus; not a complete experiment
What is an investigation
500
the observed effect of the force of gravitation
What is gravity
500
a particle, object, or system that lacks a net charge
What is nuetral
500
the transmission of heat through a medium and without the
motion of the medium
What is conduction
500
a mixture of two or more substances uniformly dispersed
throughout a single phase
What is a solution
500
the event, condition, or factor that can be changed or
controlled in order to study or test a hypothesis in a
scientific experiment