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Q: The substances used to start a chemical change are called?
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What type of substances start a chemical reaction?

These substances are called reactants.


What Process changes matter into one or more new substances?

A chemical reaction is a process in which new substances are formed.


What are the substances you start with in a chemical reaction called?

The reactants


What are substance you start with in a chemical reaction called?

The reactants


What is the name given to the substances at the start of a reaction?

The chemicals at the start of a reaction are always called the reactants.The chemicals at the end of a reaction are always called the products.


The substances present when a chemical reaction begins?

The substances that are present when a chemical reaction begins are reactants, at the end of the reaction they form products.


What substances is needed to start a chemical reaction?

reactants is your answer


What happens when chemical?

When atoms of two different elements join together (or combine) to make molecules of a compound, scientists say that a Chemical Change or Chemical Reaction has taken place. I you look at the substances you start off with and the substance you get after the change, they are often different.


What is a substance that enters into a chemical reaction called.?

The reactant is the substance present at the start of a chemical reaction, while the product is the substance(s) formed from a chemical reaction.


What do you call a new substance?

they are called products.for egsample if copper and oxygen were your reactants copper oxide would be the new substance made and it would be called your product.reactant+reactant=product


What does a word equation or a chemical reaction tell you?

I think that a chemical equation tells a chemist that substances you start with and substances you end with


What happens when chemicals join?

When atoms of two different elements join together (or combine) to make molecules of a compound, scientists say that a Chemical Change or Chemical Reaction has taken place. I you look at the substances you start off with and the substance you get after the change, they are often different.