a particle, object, or system that lacks a net charge
What is neutral?
100
unit of energy; the amount of heat needed to raise one gram
of water one degree Celsius at standard atmospheric
pressure
What is calorie?
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 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
What is experiment?
200
amount of distance traveled divided by time taken; the
time-rate at which any physical process takes place
What is speed?
200
the smallest unit of a chemical element that can still retain
the properties of that element
What is atom?
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
What is condensation?
200
a solid, liquid, or gas that possesses inertia and is capable
of occupying space
What is matter?
200
a procedure that is carried out in order to observe a
response caused by a stimulus; not a complete experiment
What is investigation?
300
amount of distance traveled divided by time taken; the
time-rate at which any physical process takes place
What is amplitude?
300
a subatomic particle having a positive charge and which is
found in the nucleus of an atom
What is proton?
300
heat transfer in a gas or liquid by the circulation of currents
from one region to another
What is convection
300
the product of a thorough blending of two or more
substances, not chemically combined
What is mixture?
300
factor being measured or observed in an experiment
What is dependent variable?
400
the observed effect of the force of gravitation
What is gravity?
400
a stable elementary particle that is negatively charged and
orbits the nucleus of an atom
What is electron?
400
internal energy found by adding the kinetic energy of
particles making up a substance
What is thermal energy?
400
the force exerted per unit area
What is pressure?
400
the factor that is changed in an experiment in order to study
changes in the dependent variable
What is independent variable?
500
rate of change in velocity, usually expressed in meters per
second; involves an increase or decrease in speed and/or a
change in direction
What is acceleration?
500
a subatomic particle having zero charge, found in the
nucleus of an atom
What is neutron
500
a measure of randomness or disorder of a closed system
What is entropy?
500
a piece of glass with polished plane surfaces that disperses
a beam of white light into its component colors
What is prism?
500
the event, condition, or factor that can be changed or
controlled in order to study or test a hypothesis in a
scientific experiment