Textbook Question
Label each of the following as either a physical process or a chemical process: (a) crushing a metal can (b) production of urine in the kidneys
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Ch.1 - Introduction: Matter, Energy, and Measurement
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232
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Table of contents
- Ch.1 - Introduction: Matter, Energy, and Measurement140
- Ch.2 - Atoms, Molecules, and Ions192
- Ch.3 - Chemical Reactions and Reaction Stoichiometry172
- Ch.4 - Reactions in Aqueous Solution156
- Ch.5 - Thermochemistry151
- Ch.6 - Electronic Structure of Atoms137
- Ch.7 - Periodic Properties of the Elements127
- Ch.8 - Basic Concepts of Chemical Bonding143
- Ch.9 - Molecular Geometry and Bonding Theories167
- Ch.10 - Gases147
- Ch.11 - Liquids and Intermolecular Forces97
- Ch.12 - Solids and Modern Materials129
- Ch.13 - Properties of Solutions126
- Ch.14 - Chemical Kinetics175
- Ch.15 - Chemical Equilibrium107
- Ch.16 - Acid-Base Equilibria127
- Ch.17 - Additional Aspects of Aqueous Equilibria133
- Ch.18 - Chemistry of the Environment88
- Ch.19 - Chemical Thermodynamics140
- Ch.20 - Electrochemistry137
- Ch.21 - Nuclear Chemistry99
- Ch.22 - Chemistry of the Nonmetals66
- Ch.23 - Transition Metals and Coordination Chemistry69
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry11
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Not the one you use?Change textbook
Chapter 1, Problem 20b
(b) Which properties of zinc can you describe from the photo? Are these physical or chemical properties?
Verified step by step guidance1
Identify the properties of zinc that can be observed from the photo, such as color, luster, and texture.
Determine if these properties are physical or chemical. Physical properties are those that can be observed without changing the substance's chemical identity, such as color, density, and state of matter.
Consider if any chemical properties are visible, which would involve the substance's ability to undergo a chemical change, such as reactivity with acids or oxygen.
Classify the observed properties: for example, color and luster are physical properties because they do not involve a change in the chemical composition of zinc.
Summarize the properties identified and their classification as either physical or chemical, based on the observations from the photo.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Physical Properties
Physical properties are characteristics of a substance that can be observed or measured without changing its chemical identity. Examples include color, melting point, boiling point, density, and conductivity. These properties help in identifying and describing materials based on their appearance and behavior under various conditions.
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Physical Properties
Chemical Properties
Chemical properties refer to a substance's ability to undergo chemical changes and transform into different substances. These properties include reactivity with acids, bases, or other chemicals, flammability, and oxidation states. Understanding chemical properties is essential for predicting how a substance will interact in chemical reactions.
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Zinc Characteristics
Zinc is a transition metal known for its lustrous appearance, malleability, and resistance to corrosion. It exhibits both physical properties, such as a shiny, silver-gray color and a relatively low melting point, and chemical properties, such as reactivity with acids to produce hydrogen gas. Analyzing zinc's properties helps in applications ranging from galvanization to alloy production.
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Related Practice
Textbook Question
Label each of the following as either a physical process or a chemical process: (c) melting a piece of chocolate (d) burning fossil fuel (e) discharging a battery.
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Textbook Question
Zirconia, an oxide of zirconium, is often used as an affordable diamond substitute. Just like diamond, it is a colorless crystal which sparkles under sunlight. Which of the following physical properties do you think would help in differentiating between diamond and Zirconia—melting point, density, or physical state?
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Textbook Question
The radius of an atom of tungsten (W) is about 2.10 Å. (b) How many tungsten atoms would have to be lined up to create a wire of 2.0 mm?
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Textbook Question
In the process of attempting to characterize a substance, a chemist makes the following observations: The substance is a silvery white, lustrous metal. It melts at 649 °C and boils at 1105 °C. Its density at 20 °C is 1.738 g/cm3. The substance burns in air, producing an intense white light. It reacts with chlorine to give a brittle white solid. The substance can be pounded into thin sheets or drawn into wires. It is a good conductor of electricity. Which of these characteristics are physical properties, and which are chemical properties?
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Textbook Question
A match is lit and held under a cold piece of metal. The following observations are made: (a) The match burns. (b) The metal gets warmer. (c) Water condenses on the metal. (d) Soot (carbon) is deposited on the metal. Which of these occurrences are due to physical changes, and which are due to chemical changes?
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