9294396
Descripción
Fichas por Assged Abdalla, actualizado hace más de 1 año
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Creado por Assged Abdalla
hace alrededor de 7 años
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| Pregunta | Respuesta |
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1.Define the term chromatography.
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Chromatography is the process of separating a mixture by making it move over or through another. |
| 2.What is evaporation? |
The addition of heat causing a liquid
to change its state into a gas.
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3. What is crystallization?
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A formation of crystals as a dissolved substance solidifies. |
| 4. What is distillation? |
Evaporation and condensation that separates solids from liquids, or liquids from liquids letting both materials recover.
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| 5. How can evaporation be used in restaurants? | When a chef makes a sauce, the water in the sauce evaporates making the sauce thicker. |
| 6. What is the difference between smaller and larger crystals? | Smaller crystals form when the solvent evaporates quickly, and larger crystals form when the solvent evaporates slowly. |
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7. How can evaporation and crystallization be used in an industry?
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Evaporation and crystallization can be used in an industry for removing soluble substances from solutions to purify them. |
| 8. How re crystals formed? | The solute left behind by evaporation forms crystals. |
| 9. How do salt producers make salt? | They use the heat of the sun to evaporate water from pools of salt water which leave behind crystals to be collected. |
| 10. What is an impurity? |
A solution may have unwanted substances dissolved in it known as impurities.
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