The substances you start with are called and after the chemical change, what is formed is called the _.

reactants, products

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reactants , gases

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element , products

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element , compounds

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Solution

The correct option is A reactants, products
A reactant is a substance that is present at the start of the chemical reaction or substances present to the left of the arrow in a chemical equation. A product is a substance that is present at the end of a chemical reaction or substance to the right of the arrow is called products.
For example,
$Z n + S \to Z n S$
In the above equation, zinc and sulphur are reactants that combine chemically to form the product zinc sulphide.

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Similar questions

Fill in the blanks :

(a) A reaction in which two or more substances combine to form a single substance is called a ___ reaction.

(b) A ___ is a substance which changes the rate of a chemical reaction without undergoing a chemical change.

(d) The reaction between an acid and a base is called ___

(e) Soluble bases are called ___

(f) The chemical change involving iron and hydrochloric acid illustrates a ___ reaction.

(g) In the type of reaction called ___ two compounds exchange their positive and negative radicals respectively.

(h) A catalyst either ___ or ___ the rate of a chemical change but itself remains ___ at the end of the reaction.

(i) The chemical reaction between hydogen and chlorine is a ___ reaction

(j) When a piece of copper is added to silver nitrate solutuions, it turns ___ in colour.

Substances that are formed as a result of a chemical reaction are called ________ and are written on the ________ side of the equation.

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