Chem 1061 Lecture 1 Outline of Last Lecture I no previous lecture first day of class Outline of Current Lecture 1 1 1 Some Fundamental Definitions This is some basic terminology to understand to start this course 2 1 4 Measurement and Chemical Problem Solving This is a beginning into problem solving in chemistry using conversion factors to go between different measurement units Current Lecture 1 1 Some Fundamental Definitions Matter anything with mass that occupies space Property characteristics describing a substance Chemistry the study of matter and its properties changes that matter undergoes and the energy associated with these changes Chemical Physical Properties and Changes I II Physical a Properties any property a substance shows by itself Examples include density and the melting point of water b Changes when a substance alters its physical properties but not its composition Examples include ice melting into water Chemical a Properties any properties of a substance as it changes into or interacts with another substance Example would be flammability b Changes when a substance is converted into different substances Example would be paper burning 1 4 Measurement and Chemical Problem Solving All answers in Chemistry need a NUMBER and a UNIT Example 13 68g cm 2 These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute We convert from one unit to another using conversion factors Sample Problem How long does it take to drive to Chicago if it s 400 miles away and you drive 70mph Assuming you maintain a constant speed and do not stop 400 Miles x 1 hour 70 miles 5 7 hours Units of Measurement In Chemistry we use SI units which is a revised system of the Metric System In your textbook Table 1 2 shows SI Units and conversions are found on Table 1 4
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