Concept explainers
(a)
Interpretation:
A lemon is yellow.
The underlined property has to be classified as intensive or extensive property and as chemical or physical property.
Concept Introduction:
Intensive property:
The property that depends on what the sample is and not on how much quantity of it is present is said to be Intensive property.
Extensive property:
The property that depends on the size of the sample and measures how much matter is present in a particular sample is said to be Extensive property.
Chemical property:
The property that describes the reactivity of a material and in the process forms new and different substances.
Physical property:
The property that can be measured without changing the composition of the sample.
(b)
Interpretation:
Sulfuric acid converts sugar to carbon and steam.
The underlined property has to be classified as intensive or extensive property and as chemical or physical property.
Concept Introduction:
Refer to part-a.
(c)
Interpretation:
The sample has a mass of
The underlined property has to be classified as intensive or extensive property and as chemical or physical property.
Concept Introduction:
Refer to part-a.
(d)
Interpretation:
Sand is insoluble in water.
The underlined property has to be classified as intensive or extensive property and as chemical or physical property.
Concept Introduction:
Refer to part-a.
(e)
Interpretation:
Wood burns in air, forming carbon dioxide and water.
The underlined property has to be classified as intensive or extensive property and as chemical or physical property.
Concept Introduction:
Refer to part-a.
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Chapter 1 Solutions
Chemistry: Principles and Practice
- Classify each change as physical or chemical. (a) A balloon filled with hydrogen gas explodes upon contactwith a spark.(b) The liquid propane in a barbecue evaporates away becausesomeone left the valve open.(c) The liquid propane in a barbecue ignites upon contactwith a spark.(d) Copper metal turns green on exposure to air andwater.arrow_forwardWhich of the following processes is a physical change? (a) evaporation of water; (b) combination ofhydrogen and oxygen gas to produce water; (c) dissolution of sugar in water; (d) separation of sodium chloride (table salt) into its constituentelements, sodium and chlorine; (e) combustion of sugar to produce carbon dioxide and water.arrow_forwardDefine physical change and chemical change. State which type of change occurs in each of the following statements: (a) Passing an electric current through molten magnesium chloride yields molten magnesium and gaseous chlorine. (b) The iron in discarded automobiles slowly forms reddish brown, crumbly rust.arrow_forward
- Classify each of the following as a physical change or a chemical change. (a) Touching a lit candle to hydrogen soap bubbles gives an explosion. (b)Heating water in a flask produces moisture on the glass. (c) Combining two colorless solutions gives a yellow solid. (d) Pouring vinegar on baking soda produces gas bubbles.arrow_forwardThe following statements pertain to the development of the theory of combustion by the French chemist Lavoisier in the eighteenth century. Match the statement with the appro- priate step (observation, hypothesis, experiment designed to test hypothesis) in the scientific method. (a) A metal is burned in a closed container, and the change in mass of the solid and volume of the gas is measured.(b) Oxygen gas combines with a substance during its combustion.(c) Combustion of a metal in a closed container ceases after a length of time.arrow_forwardDetermine whether each of the following represents a physical property or a chemical property: (a) Chlorine gas has a greenish-yellow tint. (b) The density of water at 4°C is 1.000 g/mL. (c) Hydrogen gas is very flammable. (d) Aluminum is a solid at 25°C. (e) Water is colorless and odorless. (f) Lemon juice tastes sour. (g) Gold does not tarnish. (h) Copper cannot be decomposed.arrow_forward
- Which of the following statements describe physicalproperties and which describe chemical properties?(a) Iron has a tendency to rust. (b) Rainwater inindustrialized regions tends to be acidic. (c) Hemoglobinmolecules have a red color. (d) When a glass of wateris left out in the sun, the water gradually disappears.(e) Carbon dioxide in air is converted to more complexmolecules by plants during photosynthesis.arrow_forwardClassify each of the following as a physical change or a chemical change. For each chemical change, explain how you can tell that a new substance has been formed. (a) Water boils and turns into steam. (b) Wood is sawed and made into a toy box. (c) Firewood burns and ashes remain. (d) Orange drink crystals are stirred into a pitcher of water. (e) Sugar, eggs, and flour are mixed and baked into cookies.arrow_forwardClassify the following as a physical property or a chemical property. (a) Copper metal has a red-orange metallic luster. (b) Copper metal has a density of 8.94 g/cm3 (c) Copper metal and chlorine gas produce CuCl2arrow_forward
- Define physical changeand chemical change.State which type of change occurs in each of the following statements:(a) Passing an electric current through molten magnesium chlo-ride yields molten magnesium and gaseous chlorine.(b) The iron in discarded automobiles slowly forms reddishbrown, crumbly rust.arrow_forward42. Classify each change as physical or chemical.(a) Sugar dissolves in hot water.(b) Sugar burns in a pot.(c) A metal surface becomes dull because of continued abrasion.(d) A metal surface becomes dull on exposure to air.arrow_forwardThe molecular liquid chloroform (CHCl3) has a density of 1.48 g/mL, while the molecular liquid bromoform (CHBr3) has a density of 2.89 g/mL.(a) When 44.0 mL of CHCl3 and 39.2 mL of CHBr3 are mixed, a clear liquid solution forms. Is this a chemical or a physical change?arrow_forward
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