Introductory Chemistry For Today
8th Edition
ISBN: 9781285644561
Author: Seager
Publisher: Cengage
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How does a homogeneous mixture differ from a pure substance? How are they similar?
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How does a heterogeneous mixture differ from a homogeneous mixture? How are they similar?
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The boiling of water is a physical change because the water disappears. physical change because the gaseous water is chemically the same as the liquid. chemical change because heat is needed for the process to occur. chemical change because hydrogen and oxygen gases are formed from water. chemical and physical change. Explain your answer.
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How does an element differ from a compound? How are they similar?
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Classify the following as solution or heterogeneous mixture. (a) iron ore (b) chicken noodle soup (c) tears
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How do molecules of elements and molecules of compounds differ? In what ways are they similar?
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A cup of coffee is an example of: a. a liquid pure substance b. a gaseous mixture c. a solid pure substance d. a liquid mixture e. a solid mixture
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Which of the following are the same and which are different? a. a substance and a pure substance b. a heterogeneous mixture and a solution c. a substance and a mixture d. a homogeneous mixture and a solution
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How do you distinguish (a) chemical properties from physical properties? (b) distillation from filtration? (c) a solute from a solution?
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If a solid block of glass, with a volume of exactly 100 in.3, is placed in a basin of water that is full to the brim, then of water will overflow from the basin.
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A gasoline station in Manila, Philippines, charges 38.46 pesos per liter of unleaded gasoline at a time when one US. dollar (USD) buys 47.15 pesos (PHP). The car you are driving has a gas tank with a capacity of 14 U.S. gallons and gets 24 miles per gallon. (a) What is the cost of unleaded gasoline in Manila in USD per gallon? (b) How much would a tankful of unleaded gasoline for your car cost in USD? (c) Suppose that you have only PHP 1255 (a day's wage for an elementary school teacher) and the car's tank is almost empty. How many miles can you expect to drive if you spend all your money on gasoline?
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Ethanol and benzene dissolve in each other. When 100. mL of ethanol is dissolved in 1.00 L of benzene, what is the mass of the mixture? (See Table 1.5.)
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Types of Matter: Elements, Compounds and Mixtures; Author: Professor Dave Explains;https://www.youtube.com/watch?v=dggHWvFJ8Xs;License: Standard YouTube License, CC-BY