Atoms & Molecules: IXL E5-E8

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What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

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What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

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What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together.

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What is an elementary substance?

Back

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

Front

What is methane?

Back

Methane is a compound made of one carbon atom and four hydrogen atoms (CH4), commonly found in natural gas.

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What is silane?

Back

Silane is a compound made of silicon and hydrogen (SiH4), used in the production of solar cells.

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What is water?

Back

Water is a compound made of two hydrogen atoms and one oxygen atom (H2O), essential for life.

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What is ammonia?

Back

Ammonia is a compound made of one nitrogen atom and three hydrogen atoms (NH3), commonly used in agriculture.

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What is the difference between an element and a compound?

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An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms.

Front

What is a byproduct?

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A byproduct is a secondary product derived from a manufacturing process or chemical reaction.