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What is energy?
The ability to do work
What is thermal energy?
internal energy of an object due to the kinetic energy of its atoms and/or molecules
What is endothermic change?
chemical reaction that is accompanied by the absorption of heat, or an organism that generates heat to maintain its temperature
What is radiation?
release of energy, whether it takes the form of waves or particles
What is the law of conservation of matter?
matter cannot be created nor destroyed in an isolated/closed system
What is kinetic energy?
energy possessed by an object in motion (1/2 x mass of object x velocity squared)
What is electro magnetic energy?
movement of electricity charged particles traveling through a vacuum or matter
What is exothermic change?
chemical reaction that releases energy through light or heat
What is sound?
is the movement of energy through substances in longitudinal (compression/rarefaction) waves
What is temperature?
the property of matter which reflects the quantity of energy of motion of the component particles
What is potential energy?
energy which an object has because of its position; stored energy
What is electro magnetic wave?
are created as a result of vibrations between an electric field and a magnetic field. Examples: radio, microwave, infrared, visible, ultraviolet, x-rays, gamma ray
What is the law of conservation of energy?
energy can neither be created nor destroyed an isolated/closed system- only converted from one form of energy to another
What is matter?
anything that has mass and takes up space
What is an atom?
smallest component of an element, consists of central nucleus that is usually surrounded by one or more electrons
What is mechanical energy?
kinetic energy + potential energy; sum of kinetic and potential energy; the energy of an object due to its motion or position
What is chemical energy?
energy that is stored in the bonds between atoms and molecules
What is conduction?
the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.
What is physical property?
observed or measured without changing the composition of matter, appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity
What is renewable energy?
energy that is collected from renewable resources, which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.
What is nuclear energy?
atomic energy; producing energy by fusing or combining atoms resulting in a larger atom
What is gravitational energy?
energy held by an object because of its high position compared to a lower position
What is convection?
The movement of heat by a moving liquid or gas
What is chemical property?
A characteristic of a substance that may be observed when it participates in a chemical reaction.
Examples: flammability, toxicity, chemical stability, and heat of combustion
What is non-renewable energy?
energy from the ground that has limited supplies, either in the form of gas, liquid or solid, cannot be replenished, or made again, in a short period of time. Examples include: oil (petroleum), natural gas, coal