Cmc chapter 02

Chapter Menu Analyzing Data Section 2.1 Units and Measurements Section 2.2 Scientific Notation and Dimensional Analysis Section 2.3 Uncertainty in Data Section 2.4 Representing Data Exit Click a hyperlink or folder tab to view the corresponding slides.

Section 2-1 Section 2.1 Units and Measurements ,[object Object],mass: a measurement that reflects the amount of matter an object contains ,[object Object],[object Object]

Section 2-1 Section 2.1 Units and Measurements (cont.) base unit second meter kilogram Chemists use an internationally recognized system of units to communicate their findings. kelvin derived unit liter density

Section 2-1 Units ,[object Object],[object Object]

Section 2-1 Units (cont.) ,[object Object],[object Object],[object Object]

Section 2-1 Derived Units ,[object Object],[object Object]

Section 2-1 Derived Units (cont.) ,[object Object]

Section 2-1 Derived Units (cont.) ,[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],Section 2-1 Section 2.1 Assessment Which of the following is a derived unit? A. yard B. second C. liter D. kilogram

[object Object],[object Object],[object Object],[object Object],Section 2-1 Section 2.1 Assessment What is the relationship between mass and volume called? A. density B. space C. matter D. weight

Section 2-2 Section 2.2 Scientific Notation and Dimensional Analysis ,[object Object],quantitative data: numerical information describing how much, how little, how big, how tall, how fast, and so on ,[object Object]

Section 2-2 Section 2.2 Scientific Notation and Dimensional Analysis (cont.) scientific notation dimensional analysis conversion factor Scientists often express numbers in scientific notation and solve problems using dimensional analysis.

Section 2-2 Scientific Notation ,[object Object],[object Object]

Section 2-2 Scientific Notation (cont.) 800 = 8.0  10 2 0.0000343 = 3.43  10 –5 ,[object Object],[object Object]

Section 2-2 Scientific Notation (cont.) ,[object Object],[object Object],[object Object],[object Object]

Section 2-2 Scientific Notation (cont.) ,[object Object],[object Object],[object Object]

Section 2-2 Dimensional Analysis ,[object Object],[object Object]

Section 2-2 Dimensional Analysis (cont.) ,[object Object],[object Object],[object Object]

Section 2-2 Dimensional Analysis (cont.) ,[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],Section 2-2 Section 2.2 Assessment What is a systematic approach to problem solving that converts from one unit to another? A. conversion ratio B. conversion factor C. scientific notation D. dimensional analysis

[object Object],[object Object],[object Object],[object Object],Section 2-2 Section 2.2 Assessment Which of the following expresses 9,640,000 in the correct scientific notation? A. 9.64  10 4 B. 9.64  10 5 C. 9.64 × 10 6 D. 9.64  6 10

Section 2-3 Section 2.3 Uncertainty in Data ,[object Object],experiment: a set of controlled observations that test a hypothesis ,[object Object],[object Object]

Section 2-3 Section 2.3 Uncertainty in Data (cont.) accuracy precision error Measurements contain uncertainties that affect how a result is presented. percent error significant figures

Section 2-3 Accuracy and Precision ,[object Object],[object Object]

Section 2-3 Accuracy and Precision (cont.) ,[object Object]

Section 2-3 Accuracy and Precision (cont.) ,[object Object],[object Object]

Section 2-3 Significant Figures ,[object Object],[object Object]

Section 2-3 Significant Figures (cont.) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Section 2-3 Rounding Numbers ,[object Object],[object Object]

Section 2-3 Rounding Numbers (cont.) ,[object Object],[object Object],[object Object],[object Object]

Section 2-3 Rounding Numbers (cont.) ,[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],Section 2-3 Section 2.3 Assessment Determine the number of significant figures in the following: 8,200, 723.0, and 0.01. A. 4, 4, and 3 B. 4, 3, and 3 C. 2, 3, and 1 D. 2, 4, and 1

[object Object],[object Object],[object Object],[object Object],Section 2-3 Section 2.3 Assessment A substance has an accepted density of 2.00 g/L. You measured the density as 1.80 g/L. What is the percent error? A. 20% B. –20% C. 10% D. 90%

Section 2-4 Section 2.4 Representing Data ,[object Object],independent variable: the variable that is changed during an experiment graph ,[object Object],Graphs visually depict data, making it easier to see patterns and trends.

Section 2-4 Graphing ,[object Object]

Section 2-4 Graphing (cont.) ,[object Object]

Section 2-4 Interpreting Graphs ,[object Object],[object Object]

Section 2-4 Interpreting Graphs (cont.) ,[object Object]

[object Object],[object Object],[object Object],[object Object],Section 2-4 Section 2.4 Assessment ____ variables are plotted on the ____-axis in a line graph. A. independent, x B. independent, y C. dependent, x D. dependent, z

[object Object],[object Object],[object Object],[object Object],Section 2-4 Section 2.4 Assessment What kind of graph shows how quantities vary across categories? A. pie charts B. line graphs C. Venn diagrams D. bar graphs

Resources Menu Chemistry Online Study Guide Chapter Assessment Standardized Test Practice Image Bank Concepts in Motion

Study Guide 1 Section 2.1 Units and Measurements Key Concepts ,[object Object],[object Object],[object Object],[object Object]

Study Guide 2 Section 2.2 Scientific Notation and Dimensional Analysis Key Concepts ,[object Object],[object Object],[object Object],[object Object]

Study Guide 3 Section 2.3 Uncertainty in Data Key Concepts ,[object Object],[object Object],[object Object],[object Object]

Study Guide 3 Section 2.3 Uncertainty in Data (cont.) Key Concepts ,[object Object],[object Object]

Study Guide 4 Section 2.4 Representing Data Key Concepts ,[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],Chapter Assessment 1 Which of the following is the SI derived unit of volume? A. gallon B. quart C. m 3 D. kilogram

[object Object],[object Object],[object Object],[object Object],Chapter Assessment 2 Which prefix means 1/10 th ? A. deci- B. hemi- C. kilo- D. centi-

[object Object],[object Object],[object Object],[object Object],Chapter Assessment 3 Divide 6.0  10 9 by 1.5  10 3 . A. 4.0  10 6 B. 4.5  10 3 C. 4.0  10 3 D. 4.5  10 6

[object Object],[object Object],[object Object],[object Object],Chapter Assessment 4 Round the following to 3 significant figures 2.3450. A. 2.35 B. 2.345 C. 2.34 D. 2.40

[object Object],[object Object],[object Object],[object Object],Chapter Assessment 5 The rise divided by the run on a line graph is the ____. A. x -axis B. slope C. y -axis D. y -intercept

[object Object],[object Object],[object Object],[object Object],STP 1 Which is NOT an SI base unit? A. meter B. second C. liter D. kelvin

[object Object],[object Object],[object Object],[object Object],STP 2 Which value is NOT equivalent to the others? A. 800 m B. 0.8 km C. 80 dm D. 8.0 x 10 5 cm

[object Object],[object Object],[object Object],[object Object],STP 3 Find the solution with the correct number of significant figures: 25  0.25 A. 6.25 B. 6.2 C. 6.3 D. 6.250

[object Object],[object Object],[object Object],[object Object],STP 4 How many significant figures are there in 0.0000245010 meters? A. 4 B. 5 C. 6 D. 11

[object Object],[object Object],[object Object],[object Object],STP 5 Which is NOT a quantitative measurement of a liquid? A. color B. volume C. mass D. density

IB Menu Click on an image to enlarge.

CIM Table 2.2 SI Prefixes Figure 2.10 Accuracy and Precision

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Cmc chapter 02

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