Chemical Reactions Quiz

Example: 3Fe + 4H2O → Fe3O4 + 4H2. Balanced chemical equations have an equal number of atoms of each element on the reactant and product side, satisfying the law of conservation of mass in a chemical reaction.

A chemical equation is the symbolic representation of a chemical reaction, using symbols and formulae of the reactants and products.

A chemical reaction is a process where substances combine to create a new substance with unique properties.

<ol> <li>Formation of a New Substance: Chemical reactions result in the formation of one or more new substances with different properties. 2. Change in Color: The color of substances involved in a chemical reaction may change. 3. Evolution of Gas: Gas production, such as bubbles or effervescence, is a common indicator of a chemical reaction. 4. Evolution or Absorption of Heat: Chemical reactions often involve the release or absorption of heat, leading to temperature changes.</li> </ol> Signup and view all the answers

<p>A balanced chemical equation ensures that there is an equal number of atoms of each element on the reactant and product side, satisfying the law of conservation of mass in a chemical reaction.</p> Signup and view all the answers