What is a chemical change?

  1. Chemistry Book profile image62
    Chemistry Bookposted 5 years ago

    What is a chemical change?

    What is the chemistry definition of a chemical change? Give a common example of a chemical change.

  2. rahul0324 profile image83
    rahul0324posted 5 years ago

    A chemical change is one which involves a shift in chemical properties of the reactants.

    Basically the reactants reach their activation energy and then start reacting to produce products whose chemical properties differ from those of the reactants.

    Examples are photosynthesis, or the making of tea,

    An example of reaction involving a chemical change is

    H2 + Cl2 = 2HCl

    A chemical change involves changes in the internal energy, entropy, reversible work, kinetic and potential energies.

    A chemical reaction may be reversible, reversibility rates are defined by the reaction constants  for the reaction