Significant Figures Step by Step | How to Pass Chemistry

Learn how to find significant figures in a few minutes. This video helps you understand how to use all the significant figure rules, and how to round to the right number of sig figs when adding, subtracting, multiplying and dividing.
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In depth "how-to-guide" on significant figures:
bit.ly/sigfighowto
TIMESTAMPS
0:24 - What Are Significant Figures?
0:35 - Significant Figure Rules
2:24 - Adding and Subtracting Sig Fig Rules
3:11 - Multiplying and Dividing Sig Fig Rules
3:57 - Practice Problems
4:29 - Quick Summary of What You Need to Know
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Haha happy to keep you sane!

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@@melissamaribel 3:09 why do you round to three sig figs

[@benitoshapiro7131]

@@jonahmaurer5937 because out of the two numbers that were multiplied (24.5 and 63.2751), the least sig figs were in 24.5, and there were 3 sig figs in that number. When multiplying or dividing, you round the answer to the number of sig figs that is the least out of what you multiplied/divided

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Did you pass with an A?

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Aww you are so welcome Brenda!! Happy it's making sense and you're not bored! 😂

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Here's another video I did on adding and multiplying significant figures in the same problem kzbin.info/www/bejne/Y5XNnouhlrygr9U

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In multiplication and divison of sig figs, the least amount of sig figs in the equation is the same amount of sig figs in the result. Now in addition does that still apply but with decimal places? For example my teacher wrote: 0.02cm + 2.371cm. The one with least decimal places is 0.02 so the result 2.391 would round to what?

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Omg yes!!! Thank you so much for your videos! Where is the link to the practice problems?

[@melissamaribel]

You are so welcome! And I no longer have those practice problems available but I did create a detailed how to guide on significant figures and dimensional analysis. You can shop those notes here: melissa.help/sigfignotes

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