What is rate of change in velocity, usually expressed in meters per second
100
the smallest unit of a chemical element that can still retain the properties of that element
What is atom
100
calorie
What is unit of energy; the amount of heat needed to raise one gram of water one degree Celsius at standard atmospheric pressure
100
density
What is concentration of matter of an object
100
variable
What is the event, condition, or factor that can be changed or controlled in order to study or test a hypothesis in a scientific experiment
200
force
What is a push or a pull
200
electron
What is a stable elementary particle that is negatively charged and orbits the nucleus of an atom
200
emission of energy in the form of rays or waves
What is radiation
200
solid
What is having a definite shape and a definite volume;
200
experiment
What is 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
300
observed effect of the force of gravitation
What is gravity
300
neutron
What is subatomic particle having zero charge
300
a form of energy resulting from the temperature difference between a system and its surroundings
What is heat
300
one of the fundamental states of matter with a definite volume but no definite shape
What is a liquid
300
a set of objects, organisms, or different parts acting to form a whole
What is a system
400
What is the time-rate at which a body changes its position
What is velocity
400
a subatomic particle having a positive charge
What is a proton
400
a quantity that describes the capacity to do work
What is energy
400
one of the fundamental states of matter in which molecules do not have fixed volume or shape
What is a gas
400
a procedure that is carried out in order to observe a response caused by a stimulus;
What is an investigation
500
amount of distance traveled divided by time taken
What is speed
500
a substance that cannot be reduced to a simpler substance by chemical means
What is an element
500
evaporation
What is the process in which a liquid is converted to its vapor phase by heating the liquid
500
volume
What is a measure of the amount of space an object takes up;
500
the factor that is changed in an experiment in order to study changes in the dependent variable