Properties of Elements, Compounds, and Mixtures

Front

What is an element?

Back

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

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together. For example, water (H2O) is a compound made of hydrogen and oxygen.

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 own properties.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout. An example is saltwater, where the salt is evenly distributed.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture that does not have a uniform composition. An example is a salad, where the individual ingredients can be seen and separated.

Front

What is a pure substance?

Back

A pure substance is a material that has a constant composition and consistent properties throughout. It can be an element or a compound.

Front

How are atoms organized in tree bark?

Back

Some atoms are by themselves and some are joined together to form molecules.

Front

What is the difference between an element and a compound?

Back

An element consists of only one type of atom, while a compound consists of two or more different types of atoms chemically bonded together.

Front

What is the definition of a chemical bond?

Back

A chemical bond is the force that holds atoms together in a compound. It can be ionic or covalent.

Front

What is an example of a compound?

Back

Water (H2O) is an example of a compound, as it is made up of hydrogen and oxygen atoms.