Matter, Elements, and Atoms
Matter is anything that has mass and takes up space. It can exist as a solid, liquid, gas, or heated plasma. All matter is made up of tiny particles called atoms, which are the smallest units of an element that still maintain its properties.
An element is a pure substance composed of only one type of atom. For example, pure gold contains only gold atoms. The most important elements in living things can be remembered with the acronym CaPONCH: Calcium, Phosphorus, Oxygen, Nitrogen, Carbon, and Hydrogen.
When atoms join together, they form molecules. If different types of elements combine chemically in fixed ratios, they create compounds. Think of it this way: atoms are like letters, molecules are like words, and compounds are specific types of words with fixed patterns.
💡 Quick Tip: Every living organism on Earth contains the same basic elements (CaPONCH), just arranged in different ways to create all the amazing diversity of life!
