TEAS 7 Test Chemistry (All TEAS Test Topics) 2022 / 2023
Cohesion - correct answerCohesion is the tendency of particles of the same kind to stick to each other and is an important property to consider when looking at st
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TEAS 7 Test Chemistry (All TEAS Test Topics) 2022 / 2023
Cohesion - correct answerCohesion is the tendency of particles of the same kind to stick to each other and is an important property to consider when looking at states of matter.
This image describes the various phase changes and how it either absorbs or releases energy. - correct answerPlease see chart.
TEAs 7 Online Course - correct answerwww.SmartEditionAcademy.com
What phase changes require energy to be added to the system because the substance has more energy at the end of the phase change? - correct answerThe phase changes are melting, vaporization (boiling), and sublimation.
What phase changes require energy to be released to the system because the substance has more energy at the end of the phase change? - correct answerThese phase changes are freezing, condensation, and deposition.
Matter - correct answerMatter is anything that takes up space and has mass. A golf ball contains more matter than a table-tennis ball. The golf ball has more mass. The amount of matter that an object contains is its mass.
Mass - correct answerMatter is anything that takes up space and has mass. A golf ball contains more matter than a table-tennis ball. The golf ball has more mass. The amount of matter that an object contains is its mass.
substance - correct answerA substance is matter that has a uniform and definite composition. Lemonade is not a substance because not all pitchers of lemonade are identical.
physical property - correct answerA physical property is a quality or condition of a substance that can be observed or measured without changing the substance's composition.
chemical property - correct answerChemical properties are observed only when a substance undergoes a change in composition, which is a chemical change.
extensive properties - correct answerextensive properties do depend on the amount of a sample that is present. A good example of the difference between the two types of properties is that mass and volume are extensive properties, but their ratio (density) is an intensive property. Notice that mass and volume deal with amounts, whereas density is a physical property.
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