Question

atom: the smallest part of an element that still has the properties

element:

compound:

mixture:

molecule:

Explanation:

• Element: A pure substance made of only one kind of atom. It cannot be broken down into simpler substances by chemical means. For example, oxygen (\(O_2\)) and gold (Au) are elements.
• Compound: A pure substance formed when two or more elements are chemically bonded together. Compounds have a fixed composition. For example, water (\(H_2O\)) is a compound made of hydrogen and oxygen.
• Mixture: A combination of two or more substances that are not chemically combined. Mixtures can be separated by physical means. For example, a mixture of sand and water.
• Molecule: The smallest particle of a substance (element or compound) that has the chemical properties of that substance. It is made up of two or more atoms bonded together. For example, an oxygen molecule (\(O_2\)) has two oxygen atoms.

Answer:

• Element: A pure substance made of only one kind of atom.
• Compound: A pure substance formed when two or more elements are chemically bonded together.
• Mixture: A combination of two or more substances that are not chemically combined.
• Molecule: The smallest particle of a substance (element or compound) that has the chemical properties of that substance.