Salt (NaCl): A Classic Ionic Compound
Salt, or sodium chloride (NaCl), is a well-known ionic compound formed by the chemical reaction between the metal sodium (Na)
Gold (Au): A Noble Metal Known for Its Unreactivity
Gold (Au) is a highly unreactive element and is classified as a noble metal due to its remarkable resistance to
Catalysts: Lowering Activation Energy to Speed Up Reactions
A catalyst is a substance that speeds up a chemical reaction by lowering the activation energy—the minimum amount of energy
Law of Conservation of Mass: Matter Cannot Be Created or Destroyed
The law of conservation of mass states that in any chemical reaction, mass is neither created nor destroyed. This means
Endothermic Reactions: Absorbing Heat from the Surroundings
Endothermic reactions are chemical processes that absorb heat energy from their surroundings, resulting in a drop in temperature around the
Exothermic Reactions: Releasing Heat to the Surroundings
Exothermic reactions are chemical reactions that release heat energy into their surroundings. This results in an increase in temperature of
Oxygen: Vital for Cellular Respiration
Oxygen is a crucial element for respiration in most life forms, especially aerobic organisms (those that require oxygen to survive).
DNA: A Polymer of Nucleotides
DNA (Deoxyribonucleic Acid) is a polymer, meaning it is a large molecule made by linking together smaller repeating units. In
Polymers: Giant Molecules Built from Repeating Units
Polymers are large molecules composed of many repeating units called monomers that are chemically bonded together, often in long chains.
Metallic Bonds: A Sea of Electrons in Metals
Metallic bonds are the type of chemical bonds that hold metal atoms together. In this bonding model, metal atoms release