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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 |