Elements, Compounds and Mixtures

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What is a mixture?

Back

A mixture is a combination of two or more substances where each substance retains its own properties.

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What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture in which the components are evenly distributed and not easily distinguishable, such as saltwater.

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What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture where the components are not evenly distributed and can be easily distinguished, such as a salad.

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What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means, consisting 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 different elements chemically bond together in a fixed ratio.

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What is a molecule?

Back

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

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What is the difference between an element and a compound?

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

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What is a colloid?

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A colloid is a mixture where tiny particles of one substance are evenly dispersed throughout another substance, such as milk.

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What happens when different elements combine?

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When different elements combine, they form compounds through chemical reactions.

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Can mixtures be separated?

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