Atoms and Elements: Foundations of Matter

Atoms and Elements

Experiencing Atoms in the Sea and Mountains

Atoms are the fundamental building blocks of all matter and are responsible for the properties and sensations we experience in the world around us. Whether in the air, rocks, or living organisms, atoms combine in various ways to form the substances we encounter daily.

• Atoms are the smallest units of matter that retain the identity of an element.

• Typical seaside rocks are composed of silicates, which are compounds made from silicon and oxygen atoms.

• Seaside air contains molecules such as nitrogen (N2) and oxygen (O2).

• The air may also contain substances called amines, which are organic compounds derived from ammonia and often have strong odors.

• For example, triethylamine is an amine emitted by decaying fish and contributes to the characteristic fishy smell at the seaside.

Example: The presence of triethylamine in the air is detected by our sense of smell, illustrating how specific molecules (composed of atoms) can influence our sensory experiences.