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The Chemistry Book
the online textbook for high school students
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All measurements have an amount of certainty and uncertainty.

Rules

Determining significant figures (sig figs) can be daunting for some students.

Non zero numbers

Zeros as Significant Digits

Rounding

Addition and Subtraction

Multiplication and Division

Further Reading

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  • Francisco Garcia posted an update:   6 hours, 44 minutes ago · View

    I need help, what were the 4 lessons?



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The Chemistry Book is a social networking site for chemistry learners and enthusiasts. The site began as a wiki written for high school students located in California. There are over 550 articles, budding glossary, tutoring area, and course calendars.