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35 terms
Terms | Definitions |
|---|---|
 Physical Property | A characteristic of a substance that does not involve a chemical change, such as density, color, or hardness. |
| Density | The ratio of the mass of a substance to the volume of the substance. |
| Thermal Conductivity | The rate at which a substance transfers heat. |
| State of Matter | The physical forms of matter, which include solid, liquid, and gas. |
| Ductility | The ability of a substance to be pulled into a wire. |
| State | The physical form in which a substance exists. |
| Malleability | The ability of a substance to be rolled or pounded into thin sheets. |
| Physical Change | A change of matter from one form to another without a change in Chemical Properties. |
| Chemical Properties | A property of matter that describes a substance's ability to participate in chemical reactions. |
| Flammability | The ability of a substance to burn. |
| Reactivity | The ability of two or more substances to combine and form one or more substances. |
| Characteristic Properties | the properties that are most useful in identifying a substance. |
| Chemical Change | Happens when one or more substances are changed into new substances that have new and different properties. |
| Composition | The type of matter that makes up the object and the way that the matter is arranged in the object. |
| Solid | The state of matter in which the volume and shape of a substance are fixed. |
| Crystalline Solids | Solids that have a very orderly, three dimensional arrangement of particles. |
| Amorphous Solids | Solids that are made of particles that do not have a special arrangement. |
| Liquid | The state of matter that has a definite volume but takes the shape of its container. |
| Surface Tension | A force that acts on the surface of a liquid and that tends to minimize the area of the surface. |
| Viscosity | A liquid's resistance to flow. |
| Gas | The state of matter that has no definite shape or volume. |
| Change of State | The change of a substance from one physical state to another. |
| Melting | The change of state in which a solid becomes a liquid by adding energy. |
| Melting Point | The temperature at which a substance changes from a solid to a liquid. |
| Freezing | The change of state from a liquid to a solid. |
| Freezing Point | The temperature at which a liquid changes into a solid. |
| Exothermic Change | Energy is removed from the substance as it changes state. |
| Endothermic Change | Energy is added to the substance as it changes state. |
| Evaporation | The change of a substance from a liquid to a gas. |
| Boiling | The conversion of a liquid to a vapor when the vapor pressure of the liquid equals the atmospheric pressure. |
| Boiling Point | The temperature at which a liquid boils. |
| Condensation | The change of state from a gas to a liquid. |
| Condensation Point | The temperature at which the gas becomes a liquid. |
| Sublimation | The change of state in which a solid changes directly into a gas. |
| Solubility | The ability of a substance to dissolve in another substance. |
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