Chapter 7, 8, and 9 Energy in Motion

the positively charged center of the atom consisting of protons and neutrons

the change in velocity during a period of time

a type of simple machine consisting of two inclined planes back-to-back

a notation of one or two letters representing a chemical element

current containing one or more electric cells

bonds that occur when atoms share a pair of electrons

occurs when electrical charges build up on the surface of an object

an area of magnetic force

a type of simple machine consisting of an inclined plane that is wound around a cylinder or cone

the lightest stable subatomic particle known, which carries a negative charge

a type of simple machine; a bar that turns on a fulcrum

a material that can work as a conductor or an insulator, acts similar to a switch.

the distance an object moves over a given amount of time in a certain direction

the point on which a lever turns

forms hydrogen ions when they are dissolved in water.

reduces the flow of electrons

the change of an object’s position

the unit used to measure work, equal to one newton-meter of work

a continuous, unbroken path through which electricity can flow

a coil of wire with a core attached to an electrical source

 has multiple paths for electricity to travel through

a machine that combines two or more simple machines

solutions with  a pH of 7.0, neither basic or acidic

formed when bases dissolve in water

a machine to convert motion into electrical energy

a type of simple machine consisting of a wheel with a chain or rope wrapped in the groove of the wheel

based on repeated observations of how atoms act in experiments

the pull of one object on another

atoms that join together with other atoms to form units

the measurement of the amount of electrical push or force to a circuit

 a conductor that can be moved to either bridge or not bridge the gap in a circuit

formed by hydroxide ions when they are dissolved in water

a unit used to measure force (weight)

the vertical columns of the table, also called families.

 has only one path, or one circuit, for electricity to travel through

built-in memory and programs, sets of instructions that tell the computer what to do

a fixed, unmoving object needed to determine whether another object has changed position.

the scientific study of the properties and behavior of matter

a scale used to specify the acidity or basicity of an aqueous solution

a stable subatomic particle that has a positive charge equal in magnitude to a unit of electron charge

the ability to get something moving

anything that does not allow electricity to flow through it; plastic, wood, and glass are all examples

a material that allows electricity to flow through it easily

the force applied to a simple machine

the rate at which objects travel; determined by dividing the distance by amount of time the object takes to travel

the mass and velocity (speed and direction) of an object

the amount of space traveled from where an object starts to where it is at any given movement

a particle that consists of a nucleus of protons and neutrons, the basic particle of a chemical element

 the measurement of power or how fast work is done

a neutral subatomic particle that, in conjunction with protons, make up the nucleus of all atoms, not ordinary hydrogen

an electric current that carries information

uses chemical symbols and numbers to abbreviate the name of a compound.

the resistance to a change in motion

stores information temporarily on the computer

any substance composed of identical molecules consisting of atoms of two or more chemical elements

substances that contain only one kind of atom

the horizontal columns of the table

 the force that works against the effort force

 any material that has the ability to attract iron

acts like the brain of the computer