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The substances you have at the beginning of a chemical reaction are the reactants or the reagents.

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What are the old substances at the beginning of a reaction called?

The reactants are the substances that are at the beginning of a chemical reaction.


What are the substances you have at the beginning of a chemical reaction?

The "reactants".


What is the starting subsatnces in a chemical reaction?

The beginning substances in a chemical reaction are known as the reactants.


What are starting substances called?

Starting substances are called reactants in a chemical reaction. Reactants are the substances that are present at the beginning of a chemical reaction and undergo transformation into products.


What are the materials at the beginning and end of a chemical reaction called?

At the beginning of a chemical reaction, the substances involved are called reactants. At the end of the reaction, the substances that are produced are referred to as products. The transformation from reactants to products involves the breaking and forming of chemical bonds.


What are the beginning compounds of a chemical reaction called?

The beginning compounds of a chemical reaction are called reactants. Reactants are the substances that react with each other to form products during a chemical reaction.


What is the starting substance in a chemical reaction is?

The substances you have at the beginning of a chemical reaction are called the reactants.


What are the beginning and ending substance in chemical change reaction called?

In a chemical change reaction, the substances present at the beginning are called reactants, while the substances formed at the end of the reaction are known as products. Reactants undergo a transformation during the reaction to create products, which have different properties from the original substances.


Substances that are about to take part in a chemical reaction?

Reactants are the substances that are about to take part in a chemical reaction. These are the elements or compounds that are present at the beginning of the reaction and typically undergo a change during the process.


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.


Are chemical reactions a chemical change of original substances before a chemical reaction takes a place?

Chemical reactions involve the breaking and forming of chemical bonds in the original substances, resulting in a chemical change. Before a chemical reaction occurs, the original substances have specific chemical properties that undergo transformation during the reaction. The reactants interact to form new products with different chemical compositions.


Is it trueThe substance that are present when a chemical reaction begins are the products?

No: the substances present at the beginning of reaction are the reactants or reagents.