Classifying Matter

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. An example is salt (NaCl).

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are physically blended together but not chemically combined.

Front

What is an example of a pure substance?

Back

Examples of pure substances include elements like gold (Au) and compounds like water (H2O).

Front

What is an example of a mixture?

Back

Fruit punch is an example of a mixture.

Front

Is pure water (H2O) an element, compound, or mixture?

Back

Pure water (H2O) is a compound.

Front

What distinguishes a pure substance from a mixture?

Back

A pure substance has a uniform and definite composition, while a mixture contains two or more substances that retain their individual properties.

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 hydrogen (H) and oxygen (O).

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

Can a mixture be separated into its components?

Back

Yes, mixtures can be separated into their individual components by physical means, such as filtration or distillation.

Front

What is an example of a heterogeneous mixture?

Back

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