Ch 2 Matter Post-Test (2.1 - 2.3)

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout. Examples include solutions like saltwater and air.

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What is a physical property?

Back

A physical property is a characteristic of a substance that can be observed or measured without changing its identity. Examples include color, melting point, and malleability.

Front

What is a chemical property?

Back

A chemical property is a characteristic of a substance that describes its ability to undergo a specific chemical change. Examples include flammability and reactivity.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include Iron (Fe), Oxygen (O), and Gold (Au).

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. Examples include water (H2O) and carbon dioxide (CO2).

Front

What is malleability?

Back

Malleability is the ability of a substance to be deformed or shaped into thin sheets without breaking. It is a physical property.

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What is combustion?

Back

Combustion is a chemical reaction that occurs when a substance reacts with oxygen to produce heat and light, often resulting in an explosion.

Front

What is the difference between a mixture and a compound?

Back

A mixture is a combination of two or more substances that retain their individual properties, while a compound is a substance formed from two or more elements that are chemically bonded.

Front

What is an example of a homogeneous mixture?

Back

An example of a homogeneous mixture is vinegar, which is a uniform solution of acetic acid in water.

Front

What is an example of a heterogeneous mixture?

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An example of a heterogeneous mixture is a salad, where the individual ingredients can be seen and separated.