Atoms, compounds, and ions
8 videos
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AP Chemistry - Atoms, Compounds, and Ions — What You Need to Know
An overview of atomic structure, isotopes, the mole concept, chemical formulas, and polyatomic ions. Introduces key chemistry fundamentals for understanding matter.
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AP Chemistry - Atoms and Subatomic Particles
Learn about atomic structure: protons, neutrons, and electrons. Discover how protons define elements and how these particles determine an atom's properties.
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AP Chemistry - Atomic Number, Mass Number, and Isotopes
Learn about atomic structure, atomic number (Z), mass number (A), and isotopes. Understand how protons, neutrons, and electrons define elements and their isotopes.
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AP Chemistry - Average Atomic Mass
This video explains why atomic masses on the periodic table aren't whole numbers, using isotopes and weighted averages. It demonstrates calculations for chlorine and boron.
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AP Chemistry - The Mole and Avogadro's Number
Learn about the mole concept in chemistry, Avogadro's number, and how to convert between grams, moles, and atoms using molar mass.
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AP Chemistry - Empirical, Molecular, and Structural Formulas
Learn the three ways to represent chemical formulas: empirical (ratio), molecular (actual count), and structural (bonding arrangement) using sugar and water as examples.
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AP Chemistry - Calculating Molar Mass and Converting to Moles
Learn how to calculate molar mass from molecular formulas and use it to convert between grams and moles using dimensional analysis with calcium carbonate as an example.
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AP Chemistry - Polyatomic Ions — Names, Formulas, and Patterns
Learn how to memorize polyatomic ions using simple patterns with suffixes like -ate and -ite, and prefixes like per- and hypo- to master chemistry nomenclature quickly.