Introductory Chemistry For Today
8th Edition
ISBN: 9781285644561
Author: Seager
Publisher: Cengage
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- Questions 47 and 48: Samples of matter may be classified in several ways, including gas, liquid, or solid G, L, S; pure substance or mixture P, M; homogenous or heterogeneous Hom, Het; and, for pure substances, element or compound E, C. For each substance in the left column of the tables shown, place in the other columns the symbol from the top of the column that best describes the substance in its most common state at room temperature and pressure. Assume that the material is clean and uncontaminated. The first box is filled in as an example. G, L, S P, M Hom, Het E, C Limestone calcium carbonate Lead Freshly squeezed orange juice Oxygen Butter in the refrigeratorarrow_forwardIn the left box, draw a particulate-level illustration of a substance in the gaseous state. Model the particles as spheres, which can be simple circles. Assume that the box represents a tiny, closed container that holds the particles. In the right box, draw a particulate-level illustration of the same substance after it cools and becomes a liquidarrow_forwardWrite a brief description of the relationships among each of the following groups of terms or phrases. Answers to the Concept-Linking Exercises are given at the end of the chapter. Physical property, physical change, chemical property, chemical changearrow_forward
- Under appropriate conditions, hydrogen peroxide can be changed to water and oxygen gas. Use the term homoatomic or heteroatomic to classify molecules of hydrogen peroxide. Explain your reasoning.arrow_forwardCalcium carbonate (chalk) in not soluble in water. What type of matter results when calcium carbonate is added to water? Classify as an element, compound, homogeneous or heterogeneous mixture.arrow_forwardIf matter is uniform throughout and cannot be separated into other substances by physical processes, but can be decomposed into other substances by chemical processes, it is called a(n): A) heterogeneous mixture B)compound C) homogeneous mixture E) mixture of elements D) elementarrow_forward
- Which of the following is an illustration of the law of constanticomposition? A) Water is a compound. B Water can be separated into other substances by a chemical process. C Water and salt have different boiling points. D) Water is 11% hydrogen and 89% oxygen by mass. Water boils at 100 °C at 1 atm pressure,arrow_forward1) State your interpretation of the meaning of the slope for the first graph you prepared of Volume of Steel Nuts (mL) versus Number of Steel Nuts. Hint: Understanding the meaning of a slope involves several factors: the units which are a ratio of the y axis units over the x axis units, the interpretation of the slope as “number of the y axis units for every one of the x axis units” and the concept that constructing the best line or curve that follows the trend in the data is a sort of averaging of the random error throughout the data.arrow_forwardA 491.2g sample of calcium chloride has has what volume @STP? Use only the following units • atoms or particles or molecules . L • molarrow_forward
- Draw a diagram depicting what happens to the atoms of elements or molecules of compounds when a chemical change occurs and when a physical change occurs. Explain how the changes differ.arrow_forwardCompare the volumes occupied by the same sample of matter when in the solid, liquid, and gaseous states.arrow_forwardaIs the process of boiling water exothermic or endothermic with respect to the water? bA charged object is moved closer to another object that has the same charge. The energy of the system changes. Is it a change in kinetic energy or potential energy? Is the energy changes an increase or a decrease?arrow_forward
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