States of Matter (continued)
The process of changing between each phase has a specific name, many of which you are familiar with already. Condensation forms on the side of drinking classes because of differences in the air temperature and the temperature of your tasty beverage. Condensation occurs when a gas changes phase back to a liquid. Dry ice, solid carbon dioxide, undergoes sublimation at room temperature as the solid dry ice changes phases directly from a solid to a gas.
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Chemists use their knowledge of the world around them to identify the phases of the substances in chemical reactions. Your own experience should tell you that at room temperature water is a liquid, oxygen is a gas, sugar is a solid, and rust (iron (III) oxide) is a solid. Solubility plays a big role in predicting a substance's phase in chemical reactions and will be discussed in details later in the course.
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