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What is a pure solid monatomic element?

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A pure solid monatomic element consists of only one type of atom and is in solid form, such as gold (Au) or helium (He) in its solid state.

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What is a control in an experiment?

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A control is the standard to which comparisons are made in an experiment. It is the group that does not receive the experimental treatment.

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What is a mixture of compounds?

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A mixture of compounds contains two or more different compounds that are physically combined but not chemically bonded, such as saltwater.

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What is the independent variable in an experiment?

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The independent variable is the factor that is changed or manipulated in an experiment to observe its effect on the dependent variable.

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What is a homogeneous mixture?

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A homogeneous mixture is a mixture in which the composition is uniform throughout, such as air or a solution of salt in water.

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What is a pure liquid compound?

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A pure liquid compound is a substance made of two or more different elements that are chemically bonded together and is in liquid form, such as water (H2O).

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What is a dependent variable?

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The dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

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What is a heterogeneous mixture?

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A heterogeneous mixture is a mixture in which the components are not uniformly distributed, such as a salad or a mixture of sand and iron filings.

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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, consisting of only one type of atom.

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What is a compound?

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A compound is a substance formed when two or more different elements are chemically bonded together, such as carbon dioxide (CO2).