Introduction: Matter and Measurement Chemistry, The Central Science, 11th edition Theodore L. Brown, H. Eugene LeMay, Jr., Bruce E. Bursten, and Catherine J. Murphy Chapter 1 Introduction: Matter and Measurement Dana & Michelle Chatellier University of Delaware © Copyright 2009, Pearson Education

Solutions may be: solids, liquids, or gases. liquids only. none of the above.

Solutions may be: solids, liquids, or gases. liquids only. none of the above.

Properties that describe the way a substance will react to form other substances are known as: a. chemical properties. physical properties. homogeneous properties. heterogeneous properties.

Properties that describe the way a substance will react to form other substances are known as: a. chemical properties. physical properties. homogeneous properties. heterogeneous properties.

When nitric acid is added to a test tube containing copper, nitrogen dioxide gas is formed. This is the result of: an accident. a chemical reaction. a physical change. an extensive property.

When nitric acid is added to a test tube containing copper, nitrogen dioxide gas is formed. This is the result of: an accident. a chemical reaction. a physical change. an extensive property.

A solution that contains water boils at 105oC, due to the presence of either sugar or salt in the solution. How would you determine which one—sugar or salt—is present in the solution? chromatography distillation filtration tasting the solution

A solution that contains water boils at 105oC, due to the presence of either sugar or salt in the solution. How would you determine which one—sugar or salt—is present in the solution? chromatography distillation filtration tasting the solution

Heat flows spontaneously from: an object at lower temperature to an object at higher temperature. an object to another object at the same temperature. an object at higher temperature to an object at lower temperature. an object at higher elevation to an object at lower elevation.

Heat flows spontaneously from: an object at lower temperature to an object at higher temperature. an object to another object at the same temperature. an object at higher temperature to an object at lower temperature. an object at higher elevation to an object at lower elevation.

A sample of 120 milliliters of water equals: 2 fluid ounces. 4 fluid ounces. 6 fluid ounces. 8 fluid ounces.

A sample of 120 milliliters of water equals: 2 fluid ounces. 4 fluid ounces. 6 fluid ounces. 8 fluid ounces.

A student measured the concentration of a solution three times, obtaining values of 0.010 M, 0.060 M, and 0.030 M. The average concentration was thus 0.033 M. The accepted value was 0.034 M. The student’s data has: good accuracy and good precision. poor accuracy but good precision. poor accuracy and poor precision. good accuracy but poor precision.

A student measured the concentration of a solution three times, obtaining values of 0.010 M, 0.060 M, and 0.030 M. The average concentration was thus 0.033 M. The accepted value was 0.034 M. The student’s data has: good accuracy and good precision. poor accuracy but good precision. poor accuracy and poor precision. good accuracy but poor precision.

How many significant figures are in the measured number 0.082060? 3 4 5 6

How many significant figures are in the measured number 0.082060? 3 4 5 6

6.03 grams + 7.1 grams = ? 13 grams 13.1 grams 13.13 grams

6.03 grams + 7.1 grams = ? 13 grams 13.1 grams 13.13 grams

6.03 grams / 7.1 milliliters = ? 0.8 grams/milliliter

6.03 grams / 7.1 milliliters = ? 0.8 grams/milliliter