Final answer:
An element cannot be chemically broken down into simpler substances, unlike compounds, solutions, and mixtures.
Step-by-step explanation:
An element is a substance that cannot be chemically broken down into simpler substances. It consists of only one type of atom. Examples of elements include hydrogen, oxygen, and carbon.
A compound is a substance that is made up of two or more different elements that are chemically combined. Examples of compounds include water (H2O) and table salt (NaCl).
A solution is a homogenous mixture where one substance (the solute) is dissolved into another substance (the solvent). Examples of solutions include salt water and sugar water.
A mixture is a combination of two or more substances that can be separated by physical means. Examples of mixtures include air (a mixture of different gases) and a salad (a mixture of different vegetables).
Learn more about The nature of elements, compounds, solutions, and mixtures