Hello everyone! Today, I will be discussing the basics of chemical reactions. Chemical reactions occur when atoms are rearranged to form new substances. There are four main types of chemical reactions: synthesis, decomposition, single replacement, and double replacement. In a synthesis reaction, two or more substances combine to form a more complex product. In a decomposition reaction, a compound breaks down into simpler substances. Single replacement reactions involve an element replacing another element in a compound, while double replacement reactions occur when the positive and negative ions in two compounds switch places. Chemical reactions are governed by the law of conservation of mass, which states that matter cannot be created or destroyed in a chemical reaction. This means that the total mass of the reactants must equal the total mass of the products. To represent chemical reactions, we use chemical equations. Reactants are listed on the left side of the equation, with products on the right side. Coefficients are used to balance the equation, ensuring that the same number of each type of atom is present on both sides. Chemical reactions are an essential part of chemistry, and understanding the basics can help us unlock the secrets of the world around us. Thank you for watching!