Element, Compound, and Mixture

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include hydrogen, oxygen, and gold.

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What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. Examples include water (H2O) and carbon dioxide (CO2).

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded. Examples include salad, air, and soil.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout. Examples include salt water and vinegar.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture that does not have a uniform composition and the individual components can be seen. Examples include salad and soil.

Front

What is the difference between an element and a compound?

Back

An element is a single type of atom, while a compound is made up of two or more different types of atoms chemically bonded together.

Front

Can mixtures be separated?

Back

Yes, mixtures can be separated into their individual components by physical means, such as filtration or distillation.

Front

What is an example of a heterogeneous mixture?

Back

An example of a heterogeneous mixture is soil, where different components like sand, clay, and organic matter can be seen.

Front

What is an example of a homogeneous mixture?

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An example of a homogeneous mixture is salt water, where the salt is completely dissolved and cannot be seen.

Front

What is a molecule?

Back

A molecule is the smallest unit of a chemical compound that retains its chemical properties, made up of two or more atoms bonded together.