U1 Intro to Chemistry

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What is a chemical property?

Back

A characteristic of a substance that can only be observed during a chemical reaction, such as flammability.

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What is quantitative data?

Back

Data that can be measured and expressed numerically, such as temperature (e.g., 44.2°C).

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What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances, such as rusting or combustion.

Front

What is flammability?

Back

A chemical property that describes how easily a substance can ignite and burn.

Front

What are physical properties?

Back

Characteristics of a substance that can be observed without changing its identity, such as color, melting point, and density.

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What is the difference between physical and chemical properties?

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Physical properties can be observed without changing the substance, while chemical properties can only be observed during a chemical reaction.

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What is an example of a physical property?

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Melting point, boiling point, and color are examples of physical properties.

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What is an example of a chemical change?

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The rusting of iron or the burning of wood are examples of chemical changes.

Front

What is density?

Back

The mass per unit volume of a substance, often expressed in grams per cubic centimeter (g/cm³).