Molecules Review

Front

What are compounds?

Back

Compounds are substances formed when two or more elements chemically combine, resulting in new properties that differ from the individual elements.

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Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together, which can be the same or different elements.

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Front

What are atoms?

Back

Atoms are the basic building blocks of all matter, consisting of protons, neutrons, and electrons.

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Front

What is an element?

Back

An element is a pure substance made up of only one type of atom, which cannot be broken down into simpler substances.

Front

What is a coefficient in a chemical formula?

Back

A coefficient is a number placed in front of a chemical formula to indicate how many molecules or atoms are present.

Front

What is a subscript in a chemical formula?

Back

A subscript is a number written below and to the right of a chemical symbol that indicates the number of atoms of that element in a molecule.

Front

What is the difference between a molecule and a compound?

Back

A molecule can consist of the same or different types of atoms, while a compound specifically consists of two or more different elements.

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Front

What is the chemical formula for water?

Back

The chemical formula for water is H2O, indicating it is made of two hydrogen atoms and one oxygen atom.

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Front

What is the significance of chemical bonds in molecules?

Back

Chemical bonds hold atoms together in molecules, determining the molecule's properties and behavior.

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Front

Can a molecule be an element?

Back

Yes, a molecule can be an element if it consists of two or more atoms of the same element, like O2 (oxygen gas).

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