Cheatography

# Chemistry Final Cheat Sheet (DRAFT) by missvargas95

Cheat sheet for General Chemistry

This is a draft cheat sheet. It is a work in progress and is not finished yet.

### Sig Fig Rules

 To determine the number of signif­­­icant figures in a number use the following 3 rules: 1. Non-zero digits are always signif­­­icant 2. Any zeros between two signif­­­icant digits are signif­­­icant Example: .500 or .632000 the zeros are signif­­­icant .006 or .000968 the zeros are NOT signif­­­icant For addition and subtra­­­ction use the following rules: 1.Count the number of signif­­­icant figures in the decimal portion ONLY of each number in the problem 2.Add or subtract in the normal fashion 3.Your final answer may have no more signif­­­icant figures to the right of the decimal than the LEAST number of signif­­­icant figures in any number in the problem. For multip­­­l­i­c­­ation and division use the following rule: 1.The LEAST number of signif­­­icant figures in any number of the problem determines the number of signif­­­icant figures in the answer. (You are now looking at the entire number, not just the decimal portion) This means you have to be able to recognize signif­­­icant figures in order to use this rule Example: 5.26 has 3 signif­­­icant figures -> 6.1 has 2 signif­­­icant figures

### Method for conver­­sions

 #unit1 x #unit (­con­­­ve­rting to) / #unit1 tera 10^12 cancel like units giga 10^9 then multiply and divide then you get your answer with new units mega 10^6 kilo 10^ centi milli micro nano pico