Introductory Chemistry: An Active Learning Approach
6th Edition
ISBN: 9781305079250
Author: Mark S. Cracolice, Ed Peters
Publisher: Cengage Learning
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Chapter 2, Problem 70E
How many homogeneous substances can you reach without moving from where you are sitting right now?
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Chapter 2 Solutions
Introductory Chemistry: An Active Learning Approach
Ch. 2 - Consider the photograph and illustrations of table...Ch. 2 - In the left box, draw a particulate-level...Ch. 2 - Classify the following changes as chemical C or...Ch. 2 - Specific gravity is a physical property. Beakers...Ch. 2 - Classify the following as homogenous or...Ch. 2 - Table salt from the beaker on the left in the...Ch. 2 - Which of the following are compounds, and which...Ch. 2 - Prob. 2.8TCCh. 2 - Identify the net electrical force-attraction,...Ch. 2 - aIs the process of boiling water exothermic or...
Ch. 2 - In everyday language, the term conserve usually...Ch. 2 - Write a brief description of the relationships...Ch. 2 - Write a brief description of the relationships...Ch. 2 - Prob. 3CLECh. 2 - Write a brief description of the relationships...Ch. 2 - Prob. 5CLECh. 2 - Prob. 6CLECh. 2 - Prob. 1ECh. 2 - Classify each of the following as macroscopic,...Ch. 2 - Suggest a reason for studying matter at the...Ch. 2 - How does a chemist think about particles that are...Ch. 2 - Using spheres to represent individual atoms,...Ch. 2 - Describe a piece of ice at the particulate level....Ch. 2 - 7.The word pour is commonly used in reference to...Ch. 2 - Prob. 8ECh. 2 - Which of the three states of matter is most easily...Ch. 2 - Compare the volumes occupied by the same sample of...Ch. 2 - Classify each of the following properties as...Ch. 2 - Classify the italicized property as chemical or...Ch. 2 - Which among the following are physical changes? a...Ch. 2 - Classify each of the following changes as chemical...Ch. 2 - Is the change illustrated below a physical change...Ch. 2 - Is the change in the illustration below a physical...Ch. 2 - Diamonds and graphite are two forms of carbon....Ch. 2 - Aspirin is a pure substance. If you had the choice...Ch. 2 - The substance in the glass below is from a kitchen...Ch. 2 - Are the contents of the bottle in the picture...Ch. 2 - Which of the following particulate illustrations...Ch. 2 - Which of the following particulate illustrations...Ch. 2 - Which of the following are pure substances and...Ch. 2 - Which of the substances below are pure and which...Ch. 2 - Apart from food, list five things in your home...Ch. 2 - Can the terms homogeneous and heterogeneous be...Ch. 2 - Which items in the following list are...Ch. 2 - Classify each of the following mixtures as either...Ch. 2 - Some ice cubes are homogeneous and some are...Ch. 2 - The freshly polished brass cylinder in the picture...Ch. 2 - Draw a particulate-level sketch of a heterogeneous...Ch. 2 - Draw a particulate-level sketch of a homogeneous...Ch. 2 - Suppose someone emptied ball bearings into a...Ch. 2 - Suggest at least two ways to separate ball...Ch. 2 - Prob. 35ECh. 2 - You receive a mixture of table salt and sand and...Ch. 2 - Classify the following as compounds or elements: a...Ch. 2 - Classify each of the following pure substances as...Ch. 2 - Which of the following are elements, and which are...Ch. 2 - Classify each of the following pure substances as...Ch. 2 - Classify each substance in the illustrations below...Ch. 2 - Does each of the particulate-level models below...Ch. 2 - a Which of the following substances would you...Ch. 2 - a Which of the following substances would you...Ch. 2 - Metal A dissolves in nitric acid solution. You can...Ch. 2 - A white, crystalline material that looks like...Ch. 2 - Questions 47 and 48: Samples of matter may be...Ch. 2 - Questions 47 and 48: Samples of matter may be...Ch. 2 - What is the main difference between electrostatic...Ch. 2 - Identify the net electrostatic force attraction,...Ch. 2 - Identify the reactants and products in the...Ch. 2 - In the following equation for a chemical reaction,...Ch. 2 - In the equation Ni+Cu(NO3)2Ni(NO3)2+Cu, which of...Ch. 2 - Write the formulas of the elements that are...Ch. 2 - Prob. 55ECh. 2 - Classify each of the following changes as...Ch. 2 - As a child plays on a swing, at what point in her...Ch. 2 - A bicycle accelerates from 5 miles per hour to 15...Ch. 2 - After solid limestone is heated, the rock that...Ch. 2 - Before electronic flashes were commonly used in...Ch. 2 - The photograph below shows a beaker of water and a...Ch. 2 - Prob. 62ECh. 2 - Prob. 63ECh. 2 - Prob. 64ECh. 2 - Distinguish precisely and in scientific terms the...Ch. 2 - Prob. 66ECh. 2 - A natural-food store advertises that no chemicals...Ch. 2 - Prob. 68ECh. 2 - Name some pure substances you have used today.Ch. 2 - How many homogeneous substances can you reach...Ch. 2 - Which of the following can be pure substances:...Ch. 2 - Can you have a mixture of two elements as well as...Ch. 2 - Can you have more than one compound made of the...Ch. 2 - Rainwater comes from the oceans. Is rainwater more...Ch. 2 - Prob. 75ECh. 2 - Prob. 76ECh. 2 - Consider the sample of matter in the illustration...Ch. 2 - A particulate-level illustration of the reaction...Ch. 2 - Prob. 79ECh. 2 - Prob. 80ECh. 2 - Prob. 81ECh. 2 - Prob. 82ECh. 2 - Particles in the illustration below undergo a...Ch. 2 - Prob. 84E
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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 solutionarrow_forwardHow does a homogeneous mixture differ from a pure substance? How are they similar?arrow_forwardHow does a heterogeneous mixture differ from a homogeneous mixture? How are they similar?arrow_forward
- You receive a mixture of table salt and sand and have to separate the mixture into pure substances. Explain how you would carry out this task. Is your method based on physical or chemical properties? Explain.arrow_forwardWater and saline (salt) solution have in common that they are both homogeneous. How do these materials differ? Be specific and use chemical terms to describe the two systems.arrow_forwardDuring a very cold winter, the temperature may remain below freezing for extended periods. However, fallen snow can still disappear, even though it cannot melt. This is possible because a solid can vaporize directly, without passing through the liquid state. Is this process (sublimation) a physical or a chemical change?arrow_forward
- The 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_forwardSome ice cubes are homogeneous and some are heterogeneous. Into which group do ice cubes from your home refrigerator fall? If homogeneous ice cubes are floating on water in a glass, are the contents of the glass homogeneous or heterogeneous? Justify both answers.arrow_forwardWhich of the following are chemical changes? Which are physical changes? a. the cutting of food b. interaction of food with saliva and digestive enzymes c. proteins being broken down into amino acids d. complex sugars being broken down into simple sugars e. making maple syrup by heating maple sap to remove water through evaporation f. DNA unwindingarrow_forward
- 57.0 µL drops of two different liquids are put on the same surface: Liquid X Liquid Y Note for advanced students: you may assume neither liquid interacts strongly with the surface. What's different about liquids X and Y? Your answer should be the one- or two-word name of a physical property. ?arrow_forward1. Suppose some measurements are made on two different homogeneous stones to find out if they are made of the same kind of rock. The mass and volume measurements are listed below. Are the two stones the same type of rock? Why or why not? Show all calculations. Mass Volume 58.0 grams 50.1 grams 20.0 cm3 15.0 cm3 Stone 1 Stone 2arrow_forwardA chemist mixes two liquids, A and B, to form a homogeneous mixture. The densities of the liquids are 2.0514 g/mL for A and 2.6678 g/mL for B. When she drops a small object into the mixture, she finds that the object becomes suspended in the liquid; that is, it neither sinks nor floats. If the mixture is made of 41.37 percent A and 58.63 percent B by volume, what is the density of the metal? Group of answer choices 2.413 g/mL 1.753 g/mL 2.691 g/mL 2.015 g/mL 1.913 g/mLarrow_forward
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