Elements, Compounds and Mixtures

Front

What is an element?

Back

An element is a pure substance that consists of only one type of atom and cannot be broken down into simpler substances.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

Where can you find the symbols for elements?

Back

The symbols for elements can be found on the Periodic Table.

Front

What is the symbol for chlorine?

Back

The symbol for chlorine is Cl.

Front

Give an example of a mixture.

Back

Air is an example of a mixture.

Front

What distinguishes a compound from a mixture?

Back

A compound is made of two or more elements that are chemically bonded, while a mixture consists of two or more substances that are physically combined.

Front

What is the smallest unit of an element?

Back

The smallest unit of an element is an atom.

Front

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

Back

A homogeneous mixture has a uniform composition throughout, while a heterogeneous mixture has a non-uniform composition.

Front

What is the chemical formula for water, and what does it represent?

Back

The chemical formula for water is H2O, which represents a compound made of two hydrogen atoms and one oxygen atom.