Elements

1. Hydrogen (H) - The lightest element and the most abundant in the universe, often found in water and organic compounds. 2. Oxygen (O) - Essential for respiration in most living organisms and a major component of water. 3. Carbon (C) - The backbone of all organic life, forming the basis of complex molecules like proteins, DNA, and carbohydrates. 4. Nitrogen (N) - Makes up about 78% of Earth’s atmosphere and is a key part of amino acids and proteins. 5. Helium (He) - A noble gas, lighter than air, and used in balloons and as a cooling agent for certain scientific equipment. 6. Iron (Fe) - Vital for the transportation of oxygen in blood (hemoglobin) and used in construction and manufacturing. 7. Calcium (Ca) - A key element in bones and teeth, also important in muscle function and cellular processes. 8. Gold (Au) - A precious metal used for jewelry, currency, and electronics due to its high conductivity and resistance to corrosion. 9. Silver (Ag) - Another precious metal, known for its high conductivity and used in jewelry, coins, and electronic components. 10. Sulfur (S) - Found in amino acids and important in various biochemical processes, also used in fertilizers and industrial products.