the smallest unit of a chemical element that can still retain
the properties of that element
What is atom
100
a stable elementary particle that is negatively charged and
orbits the nucleus of an atom
What is electron
100
the emission and propagation of the entire range of the
electromagnetic spectrum including: gamma rays, x-rays,
ultraviolet radiation, visible light, microwaves, and radio waves
What is electromagnetic energy
100
a reaction or a change in a substance produced by
chemical means that results in producing a different
chemical
What is chemical change
100
a type of simple machine that consists of a rod driven
through the center of a cylinder that is allowed to rotate
freely, yielding a mechanical advantage equal to the
cylinder’s diameter
What is wheel & axle
200
the observed effect of the force of gravitation
What is gravity
200
a substance that cannot be reduced to a simpler substance
by chemical means
What is element
200
a fundamental principle stating energy cannot be created
nor destroyed but only changed from one form to another
What is conservation of energy
200
the product of a thorough blending of two or more
substances, not chemically combined
What is mixture
200
a change in direction of a wave that occurs as it passes
from one medium to another of different density
What is refraction
300
the time-rate at which a body changes its position; defined
as displacement divided by the time of travel
What is velocity
300
a subatomic particle having a positive charge and which is
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
a type of simple machine that consist of an inclined plane
used to separate two objects
What is wedge
400
Amount of distance traveled divided by the time taken
What is speed
400
a particle, object, or system that lacks a net charge
What is neutral
400
internal energy found by adding the kinetic energy of
particles making up a substance
What is thermal energy
400
the pivot point of a lever
What is fulcrum
400
a measure of the amount of space an object takes up; also
the loudness of a sound or signal
What is volume
500
Rate in change in velocity
What is acceleration
500
a subatomic particle having zero charge, found in the
nucleus of an atom
What is neutron
500
unit of energy; the amount of heat needed to raise one gram
of water one degree Celsius at standard atmospheric
pressure
What is calorie
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
What is density
500
a substance made up of a combination of two or more
elements held together by chemical bonds that cannot be
separated by physical means