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Unit 1 Matter
Science
Term | Definition |
---|---|
Matter | anything that has mass and takes up space |
mass | a measure of the amount of matter in a 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 mass of a substance to the volume of the substance |
physical property | a characteristic of a substance that does not involve a chemical change, such as density, color, or hardness |
chemical property | a property of matter that describes a substance's ability to participate in chemical reactions |
physical change | a change of matter from one form 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 |