What are Isotopes?

This chemistry video tutorial answers the question - what are isotopes? Isotopes are substances that are composed of the same element but consist of different mass numbers and number of neutrons. They share the same atomic number and therefore the same number of protons. This video contains plenty of examples and practice problems associated with isotopes and writing the atomic symbol for it.

Protons & Neutrons - Free Formula Sheet:

Chemistry Chapter 2 - Video Lessons:

[yaraa]

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edit: i got 100 percent in chemistry :)

[meghanstevens]

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[carla]

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[Erica-kpis]

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[daddynaruto]

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[saroeunsarawathana]

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[latinjamaican]

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[daesia]

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[kchiles]

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[AnikenSkiwalker]

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[DanielleTomale]

I have a chemistry test tomorrow including isotopes. Hopefully I'll pass tomorrow. Thanks for the tutorial! You're the best :))

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[isaacapiti]

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[صابرينحسين-ند]

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[max.h]

Like if you are watching this to study for a basic chemistry exam.

[tietie]

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[icey]

I watched the first 41 seconds and understood exactly how to do it tysm

[Zllilx]

• isotopes have different mass number (the number at the top)
• But same atomic number (the number at the bottom) they share the same number of protons
• if they are different elements their is no isotopes
• atomic number represent the protons and electrons
• the number of protons and electrons are equal to each other
• mass number - atomic number =neutrons
• the reason why the mass number are different because the number of neutrons are different.
• nuclear properties are different but chemical properties are the same
•isotopes are always composed of the same element
• if they share the same atomic number it means that they are isotopes

[pineappleavocado]

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[ontanontan]

my textbook made this so much harder than it actually was. thank you!!!