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 types of atoms bond together in a fixed ratio.

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

How many types of atoms are in K₂SO₄?

Back

There are 3 types of atoms: potassium (K), sulfur (S), and oxygen (O).

Front

What is the chemical formula for table salt?

Back

The chemical formula for table salt is NaCl.

Front

How is sodium chloride classified?

Back

Sodium chloride is classified as a compound.

Front

What is the difference between a compound and a mixture?

Back

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

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout, such as saltwater.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture that has a non-uniform composition, such as a salad.

Front

Can elements be broken down into simpler substances?

Back

No, elements cannot be broken down into simpler substances by chemical means.