Скачать или смотреть Introduction to ions | Chemistry | Khan Academy

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An atom with an electric charge is called an ion. A positively charged ion (a cation) has more protons than electrons. A negatively charged ion (an anion) has more electrons than protons.

Sections:
00:00 - Introduction to ions
00:14 - Neutral atoms and charges
00:50 - Creating a carbon ion
01:50 - Example: Boron ion
02:46 - When atoms become ions
03:04 - Example question: Platinum isotope
03:45 - Calculating platinum ion charge
04:30 - Cations vs. anions
05:14 - Finding neutrons in platinum
06:07 - Summary: Atoms vs. ions

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