Pure Substances and Mixtures Flashcard

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What is a heterogeneous mixture?

Back

A heterogeneous mixture is a combination of two or more substances that are not uniformly distributed, meaning the different components can be seen and separated easily.

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What is a molecule?

Back

A molecule is formed when two or more atoms bond together. It can consist of the same or different types of atoms.

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What is a compound?

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A compound is a substance made up of two or more different types of atoms that are chemically combined.

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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.

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What is the difference between a molecule and a compound?

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A molecule can be made of the same type of atoms (like O2), while a compound is made of different types of atoms (like H2O).

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What is a pure substance?

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A pure substance is a material that has a constant composition and consistent properties throughout, such as elements and compounds.

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What is a mixture?

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A mixture is a combination of two or more substances where each substance retains its own properties and can be separated by physical means.

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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, meaning the different components are not distinguishable.

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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.

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What is the law of conservation of mass?

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The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.