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6th Grade Physical Science Final 1

Across
The force that one surface exerts on another when the tow surfaces rub against each other
The study of properties of matter and how matter changes
A material that does not conduct heat well; a material in which charges cannot easily flow
A set of tones and overtones combined in ways that are pleasing
A chart of the elements showing the repeating pattern of their properties
Anything that has mass and occupies space
A form of the element carbon in which the atoms are arranged in a crystal structure. It is also found on a wedding ring
The amount of one material in a certain volume of another material
A device that produces a narrow beam of coherent light
The state in which one object's distance from another is changing
A mixture containing small, undissolved particles that do not settle out
The amount of energy per second carried through a unit area by a wave
An atom or group of atoms that has become electrically charged
The process that breaks down complex molecules of food into smaller molecules
A well-mixed mixture containing a solvent and at least one solute that has the same properties
A person who is trained to use both technological and scientific knowledge to solve practical problems
Unit of measurement for frequency
Down
The force exerted on a surface divided by the total area over which the force is exerted.
Tow or more substances that are mixed together, but not chemically combined
A reflected sound wave
The ratio of the mass of a substance to its volume
an upward force
The basic particle from which all elements are made
A push or pull exerted on an object
Perception of the frequency lf a sound
The change in frequency of a wave as its source moves in relation to an observer
The new food pyramid is called this
A force that holds atoms together
The temperature at which a substance changes from a solid to a liquid
The changes from gaseous to liquid state of matter
A substance formed as a chemical reaction
The rate at which velocity changes
The change of state from a liquid to a gas
The temperature at which a substance changes from a liquid to a gas
A covalent bond in which electrons are shared unequally
Sound waves with frequencies above 20,000Hz
An international computer network that shares data, information, and news
The ability to do work or cause change
Any material that attracts iron and materials that contain iron