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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 force on an object. |
Volume | The amount of space an object takes up or occupies. |
Density | A measure of the amount of mass in a given volume. |
Physical Property | A characteristic of a substance that can be observed or measured without changing the identity of the substance. |
Chemical Property | Describes a substance's ability to change into a new substance with different properties ( common chemical properties include flammability and reactivity with substances such as oxygen , water , and acids ) . |
Physical Change | Change that affects one or more physical properties of a substance. |
Chemical Change | Occurs when one or more 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 form to another. |
Law of Conservation of Mass | States that in ordinary chemical and physical changes , nass is not created or destroyed , mass is only transformed into different substances. |