Which statements correctly describe chemical reactions? Select all that apply.

In a chemical reaction, reactants are the elements or compounds that react to give a particular product(s). The reactants are the substances that start the chemical reaction and they are found at the left hand side of the chemical equation. While the products are found at the right hand side of the chemical equation and they are seen at the end of the reaction.

In chemical reaction, the number of atoms that starts the reaction remains the same. That is the same number of atoms is seen in the products. This follows the law of conservation of matter - which postulates that matter cannot be created or destroyed.

But in a chemical reaction, number of molecules are not conserved.

throwdolbeau throwdolbeau · Answer 2 · 2022-02-21T06:03:58+01:00

The statements that correctly describe chemical reactions are:

A. If the reactants include 5 atoms of Fe, then the products must include 5 atoms of Fe.

C. If the reactants include an aluminum atom, then the products must include an aluminum atom.

E. If there are a total of 15 atoms in the reactants, there must be a total of 15 atoms in the product.

Chemical Reaction:

A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products. If a physical change occurs, the physical properties of a substance will change, but its chemical identity will remain the same.

Thus, the statements that are true for a chemical reactions are A, C and E.

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