Learning Goals for Chapter 1 Describe the three states of matter and the transitions between them Describe the forms of matter and their structures at the atomic level Distinguish between physical processes and chemical reactions and between physical and chemical properties of substances Relate chemical formulas to molecular structures and vice versa Use a systematic approach called COAST to solve problems Distinguish between exact and uncertain values Describe the scientific method of inquiry Express uncertain values with the appropriate number of significant figures Develop your problem solving skills Attack problems systematically using the COAST approach Collect Organize the information given your thoughts the relevant information equations Analyze the problem and your approach to get from starting information to final answer Solve the problem Think about your answer is it reasonable Could you answer another problem like it Exact and Uncertain Values a The roadway is six lanes wide b The width of the bridge is 27 4 m c The bridge has a mass of 3 808 108 kg d The length of the bridge is 2740 m e The toll for a car traveling south increased to 6 00 on September 1 2008 Science as a process Chemistry s connections to the other sciences The scientific method revisited What s the difference between a scientific law and theory Can you prove a theory An Example In the 1920s astronomers discovered that the universe contains billions of galaxies each one containing billions of stars They also discovered that 1 the other galaxies in the universe are moving away from our own Milky Way and from each other and 2 the speeds with which these galaxies are receding are proportional to the distance between them and the Milky Way the farthest galaxies are moving away the fastest 1963
View Full Document
Unlocking...