2024 - 2025 (R) Review for Flashcard #5, Semester 1

Front

What is a pure solid monatomic element?

Back

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?

Back

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?

Back

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

Front

What is the independent variable in an experiment?

Back

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?

Back

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?

Back

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?

Back

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?

Back

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?

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.

Front

What is a compound?

Back

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