a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
What is electron
100
a unit of energy or heat that could come from a variety of sources, such as coal or gas.
What is calorie
100
Matter can change from one state to another if heated or cooled. If ice (a solid) is heated it changes to water (a liquid). This change is called MELTING.
What is the change of state
100
a variable (often denoted by y ) whose value depends on that of another.
What is dependent variable
200
strength or energy as an attribute of physical action or movement.
What is force
200
a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
What is proton
200
is the process by which water vapor in the air is changed into liquid water.
What is condensation
200
Compounds have physical and chemical properties that help us identify them. A physical property is a characteristic that can be observed or measured.Oct
What is compound
200
is a variable that is manipulated to determine the value of a dependent variable s.
What is independent variable
300
the action of one surface or object rubbing against another.
What is friction
300
a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
What is neutron
300
a principle stating that energy cannot be created or destroyed, but can be altered from one form to another.
What is conservation of energy
300
kill or harm by exposure to poisonous gas.
What is gas
300
Systems theory is an interdisciplinary field that studies complex systems in nature, society, and science.
What is system
400
the action of one surface or object rubbing against another.
What is speed
400
each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter. Each element is distinguished by its atomic number, i.e., the number of protons in the nuclei of its atoms.
What is element
400
he quality of being hot; high temperature.
What is heat
400
a roughly circular line, route, or movement that starts and finishes at the same place.
What is circuit
400
a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.
What is experiment
500
the speed of something in a given direction.
What is velocity
500
something that is gray and without hue or zero chroma; something that does not have a charge and is not magnetized; or something that does not exhibit acid or alkaline qualities.
What is neutral
500
energy that a body possesses by virtue of being in motion.
What is kinetic energy
500
having a consistency like that of water or oil, i.e., flowing freely but of constant volume.
What is liquid
500
a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.