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Unit 1 Matter

Science

TermDefinition
matter anything that has mass and takes up space.
mass a measure of the amount of matter in an object.
weight a measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe.
volume the amount of space that an object takes up, or occupies.
density the ratio of the mass of a substance to the volume of the substance.
physical properties a characteristic of a substance that does not involve a chemical change, such as density, color, or hardness.
chemical properties a property of matter that describes a substance's ability to participate in chemical reactions.
physical change a change of matter from one to another without a change in chemical properties.
chemical change a change that occurs when one or more substances change into entirely new substances with different properties.
law of conservation of mass the law that states that mass cannot be created or destroyed in ordinary chemical and physical changes.
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