Lab 1: Density – A Phyiscal Property of Matter – Flashcards
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| __________ is a physical property which represents the relationship between the mass of a substance and its volume. |
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| 1) Density |
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| Density = __________ / __________ |
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| 1) Mass 2) Volume |
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| Density is commonly expressed in the following units for the following substances: Solids = __________ / __________ Liquids = __________ / __________ Gases = __________ / __________ |
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| 1) g / cm^3 2) g / mL 3) g / L |
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| Volume is proportional to __________ x __________ x __________ |
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| 1) Length 2) Width 3) Height |
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| Normally the volume of an object can be found by the displacement of __________: __________ is added to a graduated cylinder and the volume is read. After the initial volume has been obtained, an object can be dropped into the graduated cylinder, further displacing the __________. The volume is simply the difference between the new volume with the object and that of the original volume. |
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| 1) Water 2) Water 3) Water |
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| A third method for determining volume is by __________ method. Objects in water are lighter (__________ less but have the same __________) than in air. This is because the displaced liquid pushes back on the object with a force equal to the __________ of the liquid displaced. The object will have an apparent loss of __________ equal to the mass of the __________ displaced. |
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| 1) Archimedes 2) Weigh 3) Mass 4) Mass 5) Mass 6) Liquid |
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| In making laboratory experiments, experimental errors occur because of: 1. The __________ being used, or 2. __________ error. |
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| 1) Equipment 2) Human |
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| __________ refers to how close a measurement is to the accepted value or theoretical value. Errors related to this are called "percentage error" are calculated by the equation: (|__________ value - __________ value| / __________ value) x100% |
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| 1) Accuracy 2) (|Actual value - Theoretical value| / Theoretical value) x100% |
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| __________ refers to the repeatability of a measurement. |
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| 1) Precision |
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| __________ refers to the scale used to measure something. |
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| 1) Sensitivity |
