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chemical
A chemical change.
No. The substances that react together are the reactants. The new substances produced by the reaction are the products.
composite
A change in which one or more new substances are formed is a chemical change.
A chemical reaction is the change that takes place when different substances react with one another to form new substances. The substances that react in a chemical reaction are called the reactants and the new substances formed are called the products.
Two or more substances which can chemically react form new chemicals after the reaction.1. If these chemicals react they form new compounds.2. Without a chemical reaction they form a mixture.Read more: What_is_two_or_more_substance_are_combined
two
Yes because it reacts with Sulphur(S) to make Iron Sulphide a totally new substance.
The word 'react' in chemistry means the interaction of substances to form new substances. It has nothing to do with density. Density is measured for a substance that is NOT undergoing a reaction.
Two (or more) substances react and new substances are formed.
Same. Mass is not changed.
chemical
natural
A chemical change.
natural
No. The substances that react together are the reactants. The new substances produced by the reaction are the products.