Elements, Compounds, Mixtures

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 oxygen, hydrogen, and gold.

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 a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded. The individual substances retain their properties.

Front

What is the difference between a homogeneous mixture and a heterogeneous mixture?

Back

A homogeneous mixture has a uniform composition throughout (e.g., saltwater), while a heterogeneous mixture has a non-uniform composition (e.g., salad).

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of elements, organized by increasing atomic number, that shows the relationships between them.

Front

Can compounds be separated into their elements?

Back

Yes, compounds can be separated into their elements through chemical reactions.

Front

What is an example of a homogeneous mixture?

Back

An example of a homogeneous mixture is air, which is a uniform mixture of gases.

Front

What is an example of a heterogeneous mixture?

Back

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

Front

What are pure substances?

Back

Pure substances are materials that have a constant composition and consistent properties throughout. Elements and compounds are both considered pure substances.

Front

What happens when you add raspberries to a bowl of blueberries?

Back

Adding raspberries to a bowl of blueberries creates a mixture, as the two types of fruit are combined without chemical bonding.