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Matter
Unit 1 Matter
| Question | Answer |
|---|---|
| Matter | Anything that has mass and takes up space |
| Mass | Describes the amount of matter in an object |
| Weight | A measure of gravitational force on an object |
| Volume | The amount of space that an object takes up, or occupies |
| Density | A measure of the amount of mass given volume |
| Physical Property | A characteristic of a substance that can be observed and measured without changing the identity of the substance |
| Chemical Property | Describes a substances ability to change into a new substance with different properties |
| Physical Change | A 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 Mass | States that in ordinary chemical and physical changes, mass is not created or destroyed but is only transformed into different substances |
| Atom | smallest unit of an element that maintains the properties of that element |
| Compound | Made up of differet kinds of atoms chemically combined |
| Mixture | Contains a variety of elements and compounds that are not chemically combined with eachother |
| Pure substance | Elements and compounds |
| Heterogeneous | something that does not have a uniform composition |
| Homogeneous | Describes something that has a uniform structure or composition throughout |
| Element | Made up of one or more of the same kind of atom chemically combined |
| Solid | Substance that has defined volume and shape. |
| Liquid | Substance has a definite volume but not a definite shape |
| Gas | Does not have definite volume or shape |
| Freezing | The change in satate in which a liquid becomes a slid |
| Melting | The change of state from a solid to a liquid |
| Evaporation | The change of state from a liquid to a gas that usually occurs at the surface of a liquid |
| Boiling | Rapid change from a liquid to a gas, or vapor |
| Condensation | The change of state from a gas to a liquid |
| Sublimation | The change from a solid state directly into a gas |
| Deposition | The change in state from a gas directly to a solid |