Physical science Crossword

a sample of matter with both definite and constant composition with distinct chemical properties; recipe does not change
a neutral particle made of two or more atoms joined in a chemical bond
a change in a substance that does not change its identity (Ex: sand on a beach made into a castle)
the output force times the output distance
the rate at which work is done; power = work divided by time
the force exerted on an object by the MACHINE
A material which conducts current under certain conditions (Ex: silicon used in computer chips)
the expansion of matter when it is heated
the rate at which velocity changes; increasing speed, decreasing speed, or changing direction; (final speed minus initial speed) divided by time = acceleration
speed in a given direction; distance divided by time along with a stated direction
System International; measurement system used by scientists worldwide to help guarantee clear communication; commonly known as the metric system
the distance an object travels per unit of time; speed = distance divided by time
a place or object used for comparison to determine if an object is in motion
the steepness of a line on a graph, equal to its vertical change divided by its horizontal change; slope = rise divided by run
the state in which one object's distance from another object is changing
the basic SI unit for length; equal to about 1.1 yards
how much ground is covered by a moving object from start to finish
the overall rate of speed at which an object moves at a non-constant rate; total distance divided by total time = average speed
a system that uses reflected sound waves to detect and locate objects under water
a unit used to compare the loudness of different sounds