last few energy Flashcards
Resistance
The measure of how difficult it is for electrons to flow through a material
Catalyst
Substance that changes the rate of a chemical reaction.
Electric Current
the steady flow of electrons through a conductor.
Ions
an atom or molecule with a net electric charge
Direct Current
Electric Current that flows consistently in one direction
current
The rate of flow of negative charges in an electric current
Battery
A device that stores chemical energy and converts it to electrical energy
Potential Energy
Energy that comes from position or condition
Conductors
materials that allow thermal energy to be easily transferred
Watts
Unit of power measuring electric flow
Insulators
Material where electrons can’t move easily from place to place - ex) plastic, wood, glass, and rubber
Power
The rate at which energy is transferred by a circuit
Difference between parallel circuit and series circuit? + drawing
parallel circuit has more than one branch for electricity to flow through
series circuit only has one branch for electricity to flow through.
Difference between endo thermic and expo thermic + example
Endo: energy absorbing reaction
Exo: energy releasing reaction
Cooking, fire
