Unit 4 Test

Ability of object or system to do work

Energy that transfers from one object to another because of a temperature difference between the objects

Heat is a form of energy and is an ability, so you cannot contain heat.

Thermal, chemical, electrical, electricochemical, electromagnetic, nuclear, mechanical, kinetic, and potential

Stored energy because position relative to another object Potential to do work Examples: trampoline, stretched rubber band, and bow and arrow

roller coaster or ball

Energy resulting from motion

When speed doubles, kinetic energy quadruples.

Within a closed system, energy can not be created or destroyed; it may be transformed from one form to another, but total energy stays the same.

• ) Find TE at whatever point you can solve potential and kinetic energy. • ) TE is the same throughout the coaster. • ) Solve for the unknowns.

to move things

ability to move or cause change because of the force exerted over a distance (force and distance in the same direction)

The amount of work done per time it takes to do it

The material that makes up the universe including mass and space, or volume.

Solid, liquid, and gas

The molecules are rigid, close together, and there is a definite shape and volume.

The molecules are close, move more, indefinite shape, but definite volume.

The molecules are far apart, move freely, and indefinite shape and volume.

measured without changing chemical nature of the substance

Measured by changing chemical nature of the substance

simplest form of matter that has a unique set of properites

substance contains two or more elements chemically combined in a fixed proportion

uniform througout

not uniform throughout