Is a reactant a chemical change?

Answer 1

Yes, reactants participate in a chemical reaction. In fact, without the reactants, there wouldn't even be a chemical reaction, so reactants create the chemical reaction. They do more than just participate.

Answer 2

No, reactants are the ingredients if you will that you put in at the start of the reaction and products are the resultant compunds from the reaction.

As an example 2H2(g) + O2(g) -> 2H2O, so hydrogen and oxygen are the reactants and water is the product.

An important note is that this is not a one way reaction, chemical reactions exist in an equlibrium where the rate that water is formed matches the rate that water would turn into the reactant gases. Look up chemical equlibria for more information.

Answer 3

A reactant is a initial compound in a chemical reaction, not a change.

Answer 4

errr....yes. But it's a little more accepted if you say "the reactants form the product."