Workbook_Unit1 - SC155 Introduction to Chemistry Unit 1...

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Unit 1 – Study Guide Please use the Thinkwell Videos and notes pages (found in Doc Sharing) to help you complete this guide. Section 1 – Key Terms and Concepts scientific method hypothesis scientific law theory mixture homogeneous mixture heterogeneous mixture element pure substance compound precision accuracy Section 2 – Mathematical Concepts Fractions ( notation, multiplying, rules for cancelling units ) This is a notation used to represent a part of a whole number. For example, If a whole pizza has 4 slices and you have eaten 2 of these 4 slices, you have eaten half the pizza. A fraction is also another way of writing a division problem. For example, can be read as “two fourths” or “two divided by four” Therefore, Similarly, any number divided by itself is equal to one. Any whole number not written in fraction form can be written over 1. There are a couple approaches used when multiplying fractions . I feel this is the most simple. Step 1:
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Workbook_Unit1 - SC155 Introduction to Chemistry Unit 1...

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