AP* Chemistry: The Central Science (NASTA Edition)
14th Edition
ISBN: 9780134650951
Author: Brown and Lemay
Publisher: PEARSON
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Indicate which of the following are exact numbers: (a) themass of a 3- by 5-in. index card, (b) the number of ouncesin a pound, (c) the volume of a cup of Seattle’s Best coffee,(d) the number of inches in a mile, (e) the number of microsecondsin a week, (f) the number of pages in this book.
4.) List each as being a physical or a chemical property: copper sulfate is
blue, iron is a solid, water melts at 0°C, gasoline is flammable, magnesium
reacts with acid, salt is soluble in water.
Indicate which of the following are exact numbers: (a) the massof a 32-oz can of coffee, (b) the number of students in your chemistryclass, (c) the temperature of the surface of the Sun, (d) themass of a postage stamp, (e) the number of milliliters in a cubicmeter of water, (f) the average height of NBA basketball players.
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- The following data refer to the element phosphorus. Classify each as a physical or a chemical property. (a) It exists in several forms, for example, white, black, and red phosphorus. (b) It is a solid at 25C and 1 atm. (c) It is insoluble in water. (d) It burns in chlorine to form phosphorus trichloride.arrow_forwardDecide whether each of the following is a physical property or a chemical property of the substance. a Salt substitute, potassium chloride, dissolves in water. b Seashells, calcium carbonate, fizz when immersed in vinegar. c The gas hydrogen sulfide smells like rotten eggs. d Fine steel wool (Fe) can be burned in air. e Pure water freezes at 0C.arrow_forwardWhich of the following is a physical property? Which of the following items is a pure substance? What is the value of 98 °F in units of °C? Convert 68852 millijoules into Calories. (Write your answer in the decimal form? When table salt is placed in water and stirred it dissolves and a clear liquid is obtained. This process is a: Some groceries are placed in a deep freezer that is set at 18 oF. What is this temperature in Celsius? Thermal energy is: Which of the following statements is true about a compound? How many joules are there in a 255 Calorie snack bar? Which of the following is a physical property? If the monthly electricity consumption of a household is 6,619 kWh, what is this consumption expressed in kJ? Which of the following items is a chemical property? If you hold a solid piece of pure gallium metal in your hand, your body heat will melt the gallium into its liquid form. This illustrates which of the following? On a cold day the atmospheric…arrow_forward
- Classify each property as physical or chemical. (a) the tendency for platinum jewelry to scratch easily(b) the ability of sulfuric acid to burn the skin(c) the ability of hydrogen peroxide to bleach hair(d) the density of lead relative to other metalsarrow_forwardIf an electric car is capable of going 225 km on a singlecharge, how many charges will it need to travel from Seattle,Washington, to San Diego, California, a distance of 1257 mi,assuming that the trip begins with a full charge?arrow_forwardYou are to give ampicillin, with a recommended dose of 45 mg/kg, to a child with a mass of 24 kg. If stock on hand is 250 mg/capsule, how many capsules should be given? Express the number of capsules as an integer.arrow_forward
- The density of lithium is 0.530 g/cm^3 what is the volume occupied by 1.20 x 10^3 g oflithium?arrow_forwardThe total weight of copper in a vehicle ranges from 15 kilos for a small car to 28 kilos for a luxury car. As a material scientist you are analyzing a luxury car that has 30 kilos of copper. What does this indicate about the car’s performance? Where is copper (Cu) likely to be located in the car? Discuss the physical and chemical properties of copper in your answer.arrow_forwardConvert 3.25 × 103 terameters (Tm) into nanometers (nm).arrow_forward
- Classify each of the following as (1) a physical property, (2) a physical change, (3) a chemical property, or (4) a chemical change. a. the process of burning a piece of newspaper b. the fact that metallic copper reacts with chlorine gas c. the process of melting ice d. the fact that metallic gold is a solid at room temperaturearrow_forwardWhich of the following represent physical properties or changes, and which represent chemical properties or changes? You curl your hair with a curling iron. You curl your hair by getting a “permanent wave” at the hair salon. Ice on your sidewalk melts when you put salt on it. A glass of water evaporates overnight when it is left on the bedside table. Your steak chars if the skillet is too hot. Alcohol feels cool when it is spilled on the skin. Alcohol ignites when a flame is brought near it. Baking powder causes biscuits to rise.arrow_forwardThe following are properties of substances. Decide whether each is a physical property or a chemical property. a Chlorine gas liquefies at 35C under normal pressure. b Hydrogen burns in chlorine gas. c Bromine melts at 7.2C. d Lithium is a soft, silvery-colored metal. e Iron rusts in an atmosphere of moist air.arrow_forward
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