Atoms, Elements, Molecules, Compounds

Front

What is an atom?

Back

An atom is the smallest particle that is the basic building block of matter.

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NGSS.MS-PS1-1

Front

What is a molecule?

Back

A molecule is formed when two or more atoms bond together.

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Front

What is a compound?

Back

A compound is a substance formed when two or more different elements bond together in a fixed ratio.

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Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What determines whether atoms will bond?

Back

The attraction between atoms determines whether they will bond to form a molecule.

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Front

What is the chemical formula for water?

Back

The chemical formula for water is H2O.

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Front

What is the difference between an atom and a molecule?

Back

An atom is a single particle, while a molecule is made up of two or more atoms bonded together.

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Front

Can a compound be made of the same type of atoms?

Back

No, a compound must consist of different types of atoms; if it consists of the same type, it is called a molecule of an element.

Front

What is the smallest unit of a compound?

Back

The smallest unit of a compound is a molecule.

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Front

What is the significance of the periodic table?

Back

The periodic table organizes all known elements based on their properties and atomic structure.

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