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unit 3 vocabulary
matter
| Term | Definition |
|---|---|
| matter | anything that has mass and takes up space |
| mass | describes the amount of matter in an object |
| weight | a measurement of gravitational pull on a object |
| volume | the amount of space that an object takes up or occupies |
| density | a measurement of the amount of the amount of mass in a given object |
| physical property | a characteristic of a substance that can be observed or measured without changing the identity of the object |
| chemical property | describes a substance ability to change into a new substance with a different property (common chemical property include flammability and reactivity with substances ) |
| physical change | change that affects one or more physical properties of a substance |
| chemical change | occurs when one or more substances substances change into entirely new substances with different properties |
| law of conservation of energy | states that energy cannot be created or destroyed energy can only change from one from to another |
| law of conservation of mass | states that in ordinary chemical and physical changes ,mass id not created or destroy .mass is only transformed into different substances |