Elements, Compounds, and Mixtures

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What is an element?

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An element is a pure substance that cannot be broken down into simpler substances by chemical means. It consists of only one type of atom.

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What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. It has properties different from the individual elements.

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What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded. Each substance retains its own properties.

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What is a homogeneous mixture?

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A homogeneous mixture is a mixture that has a uniform composition throughout. The individual components are not distinguishable.

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What is a heterogeneous mixture?

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A heterogeneous mixture is a mixture where the individual components can be seen and are not uniformly distributed.

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What is a molecule?

Back

A molecule is the smallest part of a compound that retains the chemical properties of that compound. It consists of two or more atoms bonded together.

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What is an atom?

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An atom is the smallest unit of an element that retains the properties of that element. It consists of protons, neutrons, and electrons.

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What is the difference between an element and a compound?

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

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Can a mixture be separated into its components?

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

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What is an example of a compound?

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An example of a compound is water (H2O), which is made of two hydrogen atoms and one oxygen atom.