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science vocabulary
Vocabulary words describing matter, properties, changes, & conservation.
| Word | Definition |
|---|---|
| Mass | is the amount of matter in an object. Mass is different from weight |
| Weight | a force due to the pull of gravity on an object. Weight, however, is influenced by the strength of the gravitational pull. Therefore, weight changes depending on the forces of gravity at that location. |
| Volume | is the amount of space occupied by a substance; size |
| Density | is how much mass a material has per unit of volume. Denser materials have more matter in a given space than less dense materials. Density is found by dividing the mass of an object by its volume. |
| Appearence | is how something looks. The property of appearance might include color, luster, shape, and the degree to which an object is transparent or opaque. |
| Odor | is the smell that a substance gives off. For example, vinegar has a pungent odor |
| Texture | how a substance feels to the touch. For example, sand has a grainy texture, while talc has a soft, fine texture. |
| The Boiling Point | the temperature at which a liquid changes to a gas. For water, it is 100 °C or 212 °F |
| The Melting/Freezing Point | the temperature at which a liquid changes from a solid to a liquid. For water, it is 0 °C or 32 °F. |
| Solubility | refers to the ability of a substance to dissolve in a solvent such as water or the amount of a substance that can dissolve in a certain amount of water. The solubility of salt is about 36 grams per 100 mL of water. |
| Polarity | refers to the distribution of electrical charge within a molecule of a substance. A water molecule is polar because its oxygen has a partial negative charge, while its hydrogens have partial positive charges. Polar solvents dissolve polar solutes, and non |
| Viscosity | refers to how easily a liquid is able to flow. |
| Conductivity | refers to the ability of a substance to transmit energy. Usually this refers to its ability to conduct electricity, but it may also refer to its ability to conduct heat. Metals and solutions that contain ions, such as HCl in water, can usually conduct el |
| Compressibility | refers to the ability of a given mass of a substance to decrease in volume in response to the application of an outside force. |
| Magnetism | refers to the ability of a substance to respond to a magnetic field. Metals such as iron, nickel, and cobalt are magnetic because they can be attracted by magnetic fields |
| Reactivity | describes whether a substance reacts easily with other substances. For example, most metals will react with acids. |
| Unreactive | a substance that does not react easily with most other substances. The noble gases are the least reactive elements, and water is an example of an unreactive compound |
Created by:
lilliemoreno1d
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