1. Gold (Au): A shiny, yellow, and very dense metal.
2. Oxygen (O): A colorless, odorless gas essential for life.
3. Carbon (C): The basis of life, found in many organic compounds.
4. Iron (Fe): A strong, magnetic metal used in many industries.
5. Hydrogen (H): The lightest and most abundant element in the universe.
1. Water (H₂O): A colorless, odorless liquid essential for life.
2. Sodium chloride (NaCl): Commonly known as table salt.
3. Carbon dioxide (CO₂): A colorless, odorless gas produced by respiration and combustion.
4. Glucose (C₆H₁₂O₆): A simple sugar found in many fruits and vegetables.
5. Ethanol (C₂H₅OH): The alcohol found in alcoholic beverages.
