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Something considered by an authority or by general consent as a basis of comparison |
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Matter with a definite shape and volume |
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Matter that has a definite volume but no definite shape |
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Matter that does not have a definite shape or volume |
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Any element or compound that has the same composition and properties throughout |
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A combination of two or more substances that are not chemically combined |
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Mixture that is thoroughly mixed up |
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Mixture that is not thoroughly mixed up; may be clumpy |
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A change that occurs when one or more substances change into entirely new substances with different properties |
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A change in size, shape, or state of matter in which the identity of the substance remains the same |
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A chemical bond in which one atom loses an electron to form a positive ion and the other atom gains to electron to form a negative ion |
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A chemical bond formed when atoms share one or more pairs of electrons |
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The rate at which an object moves |
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A change in speed or direction |
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Speed and direction of travel |
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Speed that remains the same at any given time |
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The rate at which an object is moving at a given moment in time |
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The amount of space that matter takes up |
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The amount of mass in a given volume |
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Anything that has mass and takes up space |
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The basic particle from which all elements are made |
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A substance consisting entirely of one type of atom |
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A substance formed by the chemical combination of two or more elements in definite proportions |
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An atom that has the same atomic number as other atoms of the same element, but has a different number of neutrons |
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A high temperature physical state of matter in which atoms lose their electrons |
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Solid particles arranged in repeating patterns |
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A solid made up of particles that are not arranged in a regular pattern |
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The amount of energy required to change a substance from the solid phase to the liquid phase at its melting point |
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The amount of energy required for the liquid at its boiling point to become a gas |
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The change in state from a solid directly to a gas without passing through the liquid state |
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The change of state from a gas directly to a solid |
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A liquid's resistance to flow |
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Vaporization that takes place at the surface of a liquid |
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The theoretical temperature at which matter possesses no kinetic energy |
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A theory explaining the states of matter based on the concept that all matter consists of tiny particles that are in constant motion |
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Law of Conservation of Mass |
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The law that states that mass cannot be created or destroyed in ordinary chemical and physical changes |
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Elements that are shiny, ductile, malleable, good conductors of thermal energy |
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Elements that are not malleable, not ductile, not shiny, poor conductors of thermal energy and electric current |
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Elements that have characteristics of both metals and nonmetals |
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An atom that has become electrically charged as a result of gaining or losing one or more electrons |
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The combination of two or more atoms covalently bonded together |
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A type of covalent bond sharing of electrons in which the electrons are unequally shared producing opposite charges at either end of the molecule |
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A chemical compound composed of only two elements |
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A chemical compound that contains at least three different elements |
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An object's change in position relative to a reference point |
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