Principles of General Chemistry
3rd Edition
ISBN: 9780073402697
Author: SILBERBERG, Martin S.
Publisher: McGraw-Hill College
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Textbook Question
Chapter 1, Problem 1.77P
Scenes A and B depict changes in matter at the atomic scale:
- Which show(s) a physical change? (b) Which show(s) a chemical change? (c) Which result(s) in different physical properties? (d) Which result(s) in different chemical properties? (e) Which result(s) in a change in state?
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(a) Under one set of conditions, the substances in A and B mix, and the result is depicted in
C. Does this represent a chemical
(b) Under a second set of conditions, the same substances mix, and the result is depicted in
D. Does this represent a chemical
(c) Under a third set of conditions, the sample depicted in C changes to that in D. Does this
represent a chemical or a physical change?
(d) After the change in part (c) has occurred, does the sample have different chemical
properties? Physical properties?
ra physical change?
a physical change?
7. State whether each of the following represents a chemical change or merely a physical change:(a) A few grams of sucrose (table sugar) are placed in a small beaker of deionized water; the sugar crystals “disappear,” and the liquid in the beaker remains clear and colorless.(b) A copper statue, over time, turns green.(c) When a teaspoon of baking soda (sodium bicarbonate) is placed into a few ounces of vinegar (acetic acid), volumes of bubbles (effervescence) are produced.
Scenes A–D represent atomic-scale views of different samples of substances: (a) Under one set of conditions, the substances in A and B mix, and the result is depicted in C. Does this represent a chemical or a physical change? (b) Under a second set of conditions, the same substances mix, and the result is depicted in D. Does this represent a chemical or a physical change? (c) Under a third set of conditions, the sample depicted in C changes to that in D. Does this represent a chemical or a physical change? (d) After the change in part (c) has occurred, does the sample have different chemical properties? Physical properties?
Chapter 1 Solutions
Principles of General Chemistry
Ch. 1 - Scenes A-D represent atomic-scale views of...Ch. 1 - Describe solids, liquids, and gases in terms of...Ch. 1 - Define physical property and chemical property....Ch. 1 - Define physical change and chemical change. State...Ch. 1 - Which of the following is a chemical change?...Ch. 1 - Which of the following changes can be reversed by...Ch. 1 - For each pair, which has higher potential energy?...Ch. 1 - Prob. 1.8PCh. 1 - How ait the key elements of scientific thinking...Ch. 1 - Prob. 1.10P
Ch. 1 - Prob. 1.11PCh. 1 - Prob. 1.12PCh. 1 - Prob. 1.13PCh. 1 - Write the conversion factor(s) for in2tom2 (b)...Ch. 1 - Write the conversion factor(s) for cm/mintoin/ (b)...Ch. 1 - Describe the difference between intensive and...Ch. 1 - Explain the difference between mass and weight....Ch. 1 - For each of the following cases, state whether the...Ch. 1 - Prob. 1.19PCh. 1 - A one-step conversion is sufficient to convert a...Ch. 1 - The average radius of a molecule of lysozyme, an...Ch. 1 - The radius of a barium atom is 2.2210-10 m. What...Ch. 1 - A small hole in the wing of a space shuttle...Ch. 1 - Prob. 1.24PCh. 1 - The average density of Earth is 5.5g/cm3. What is...Ch. 1 - Prob. 1.26PCh. 1 - The volume of a certain bacterial cell is 2.56m3....Ch. 1 - How many cubic meters of milk are in 1qt(946.4mL)?...Ch. 1 - Prob. 1.29PCh. 1 - An empty Erlenmeyer flask weighs 241.3 g. When...Ch. 1 - A small cube of aluminum measures 15.6 mm on a...Ch. 1 - A steek ball-bearing with a circumference of 32.5...Ch. 1 - Perform the following conversions: 68oF (a...Ch. 1 - Perfrom the following conversions: 106oF (the body...Ch. 1 - A 25-0-g sample of each of three unknwon metals is...Ch. 1 - Prob. 1.36PCh. 1 - The distance between two adjacent peaks on a wave...Ch. 1 - Prob. 1.38PCh. 1 - Prob. 1.39PCh. 1 - Prob. 1.40PCh. 1 - Each of the beakers depicted below contains two...Ch. 1 - Prob. 1.42PCh. 1 - Prob. 1.43PCh. 1 - Underline the significant zeros in the folliwng...Ch. 1 - Prob. 1.45PCh. 1 - Carry out the following calculations, making sure...Ch. 1 - Carry out the following calculations, making sure...Ch. 1 - Prob. 1.48PCh. 1 - Write the following numbers in scientific...Ch. 1 - Prob. 1.50PCh. 1 - Prob. 1.51PCh. 1 - Carry out each calculation, paying special...Ch. 1 - Carry out each calculation, paying special...Ch. 1 - Which statements include excat numbers? Angel...Ch. 1 - Which of the following include exact numbers? (a)...Ch. 1 - How long is the metal strip shown below? Be sure...Ch. 1 - These organic solvents are used to clean compact...Ch. 1 - Prob. 1.58PCh. 1 - Prob. 1.59PCh. 1 - Prob. 1.60PCh. 1 - Prob. 1.61PCh. 1 - Prob. 1.62PCh. 1 - Prob. 1.63PCh. 1 - Prob. 1.64PCh. 1 - Prob. 1.65PCh. 1 - Bromine is used to prepare the pesticide methyl...Ch. 1 - Prob. 1.67PCh. 1 - Prob. 1.68PCh. 1 - Prob. 1.69PCh. 1 - Prob. 1.70PCh. 1 - Prob. 1.71PCh. 1 - For the year 2007. worldwide production of...Ch. 1 - Prob. 1.73PCh. 1 - Prob. 1.74PCh. 1 - Prob. 1.75PCh. 1 - Prob. 1.76PCh. 1 - Scenes A and B depict changes in matter at the...Ch. 1 - Prob. 1.78PCh. 1 - Prob. 1.79PCh. 1 - If a temperature scale were based on the freezing...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Which 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_forwardYou are given a hammer, a battery, a bulb, wires and switch.(a) How could you use them to distinguish between samples of metals and non- metals?(b) Asses the usefulness of these tests in distinguishing between metals and non-metals?arrow_forwardClassify 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_forward
- Classify each property as physical or chemical. (a) the tendency of copper to turn green when exposed to air(b) the tendency of automobile paint to dull over time(c) the tendency of gasoline to evaporate quickly when spilled(d) the low mass (for a given volume) of aluminum relative to other metalsarrow_forwardDecide whether each of the following processes is primarily a physical or a chem-ical change, and explain briefly:(a)Frost forms as the temperature drops on a humid winter night.(b)A cornstalk grows from a seed that is watered and fertilized.(c)A match ignites to form ash and a mixture of gases.(d)Perspiration evaporates when you relax after jogging.(e)A silver fork tarnishes slowly in air.arrow_forwardThe diagram in (a) shows a compound made up of atoms of two elements (represented by the green and red spheres) in the liquid state.Which of the diagrams in (b) to (d) represent a physical change, and which diagrams represent a chemical change?arrow_forward
- The scenes below illustrate two different mixtures. When mixture A at 273 K is heated to 473 K, mixture B results.(a) How many different chemical changes occur?(b) How many different physical changes occur?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_forwardWhich 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_forward
- Decide whether each of the following processes is primarily a physical ora chemical change, and explain briefly:(a) Frost forms as the temperature drops on a humid winter night.(b) A cornstalk grows from a seed that is watered and fertilized.(c) A match ignites to form ash and a mixture of gases.(d) Perspiration evaporates when you relax after jogging.(e) A silver fork tarnishes slowly in air.Plan To decide whether a change is chemical or physical, we ask, “Does thesubstance change composition or just change form?”arrow_forward3) Each of the beakers depicted below contains two liquids that do not dissolve in each other. Three of the liquids are designated A, B, and C, and water is designated W. (a) Which of the liquids is (are) more dense than water and which less dense? (b) If the densities of W, C, and A are 1.0 g/mL, 0.88 g/mL, and 1.4 g/mL, respectively, which of the following densities is possible for liquid B: 0.79 g/mL, 0.86 g/mL, 0.94 g/mL, orl.2 g/mL? A warrow_forwardWhat are the answers in the gaps?arrow_forward
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