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ROB Electricity
Basic Concepts
48
Engineering
12th Grade
09/24/2013

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Term
atom
Definition
The basic building block of matter
Term
solid, liquid, and gas
Definition
The physical states of matter
Term
compound
Definition
A chemical combination of two or more elements
Term
mixtures, elements, and compounds
Definition
The chemical states of matter
Term
molecule
Definition
The smallest particle into which a compound can be divided and still retain its physical properties
Term
neutrons, electrons, and protons
Definition
The electrical particles of the atom
Term
electron and proton
Definition
The negative and positive charge symbols
Term
solar system model
Definition
A common analogy for the Bohr atomic model
Term
may not be equal to the number of protons
Definition
The number of neutrons in an atom
Term
number of protons
Definition
The atomic number
Term
weight ratio to another element
Definition
The atomic weight of an atom is determined by
Term
shells or orbits
Definition
The electrons in the atom can be found in specific
Term
valence band
Definition
Free" electrons can be found in the
Term
atom that has a net charge
Definition
An ion is a/an
Term
conductors
Definition
Elements that have many free electrons are classified as:
Term
increase by a factor of three
Definition
Two quantities are directly proportional to each other. If one quantity is increased by a factor of three, the other quantity will:
Term
decrease by a factor of four
Definition
Two quantities are inversely proportional to each other. If one quantity is increased by a factor of four, the other quantity will:
Term
unlike charges attract
Definition
The law of charges states that:
Term
a neutral charge
Definition
An atom has seven protons and seven electrons. The atom is/has:
Term
a positive ion
Definition
An atom has eight protons and seven electrons. The atom is/has:
Term
a negative ion
Definition
An atom has eight protons and nine electrons. The atom is/has:
Term
element
Definition
A(n) ____________________ is a substance that cannot be chemically broken down into simpler substances.
Term
compound
Definition
A chemical combination of two or more elements is called a(n) ____________________.
Term
mixture
Definition
A ____________________ is a combination of substances where the individual elements possess the same properties as when they are alone.
Term
Atoms
Definition
The building blocks of all matter
Term
negative
Definition
Electrons contain a ____________________ charge
Term
positive
Definition
Protons contain a ____________________ charge.
Term
valence
Definition
found in the outermost shell are called ____________________ electrons.
Term
8
Definition
A stable atom has ____________________ electrons in the valence shell.
Term
ion
Definition
An atom that is electrically unbalanced is called a(n) ____________________.
Term
conductor
Definition
Gold is classified in electricity as a(n) ____________________.
Term
source
Definition
The load receives energy from the ____________________.
Term
work
Definition
Energy is the ability to do ____________________.
Term
friction
Definition
Static electricity is generated by ____________________.
Term
mechanical
Definition
A generator produces electricity by converting ____________________ energy.
Term
1/4
Definition
If the distance between two charged bodies is doubled, the original force between them will be ____________________.
Term
6.25 x 10^18
Definition
One coulomb is equal to the combined charges of ____________________ electrons.
Term
1.6 x 10^-19
Definition
The charge of one electron is ____________________ coulomb.
Term
heat
Definition
The thermocouple produces electricity by converting ____________________ energy into electrical energy.
Term
battery
Definition
A(n) ____________________ converts chemical energy into electrical energy.
Term
electrons
Definition
The movement of ____________________ is called current
Term
8
Definition
If four coulombs flow in one-half second, the current is equal to ____________________ amperes.
Term
2
Definition
Five amperes of current flow with a total of ten coulombs will have a time value of ____________________ seconds.
Term
double
Definition
A current flow of five amperes will ____________________ if the time is decreased by one-half.
Term
omega
Definition
The unit symbol for resistance is the Greek letter ____________________.
Term
Polarity
Definition
____________________ designates the differences in charges between two points.
Term
short
Definition
A(n) ____________________ circuit refers to an unintentional and abnormally low resistance path for current flow
Term
open
Definition
A(n) ____________________ circuit refers to an unintentional and abnormally high resistance path for current flow.
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