Molecules and Extended Structures

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What is a molecule?

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A molecule is a group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.

Tags

NGSS.MS-PS1-1

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What is a covalent bond?

Back

A covalent bond is a type of chemical bond where two atoms share one or more pairs of electrons.

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What is an ionic bond?

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An ionic bond is a type of chemical bond formed through the electrostatic attraction between oppositely charged ions, typically between metals and nonmetals.

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NGSS.HS-PS1-3

Front

What are extended structures?

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Extended structures are large networks of atoms bonded together in a repeating pattern, such as crystals.

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What is a crystal structure?

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A crystal structure is a unique arrangement of atoms in a crystalline solid, characterized by a repeating pattern.

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What is the difference between ionic and covalent bonds?

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Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons between atoms.

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What are examples of ionic compounds?

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Examples of ionic compounds include sodium chloride (table salt) and magnesium oxide.

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NGSS.MS-PS1-5

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What are examples of covalent compounds?

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Examples of covalent compounds include water (H2O) and carbon dioxide (CO2).

Tags

NGSS.MS-PS1-1

Front

What is the significance of electron sharing in covalent bonds?

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Electron sharing allows atoms to achieve a full outer shell of electrons, leading to greater stability.

Tags

NGSS.HS-PS1-1

Front

What is a nonpolar covalent bond?

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A nonpolar covalent bond is a type of covalent bond where electrons are shared equally between two atoms.