iron+sulfurarrow iron sulfide In this equation , what word describes iron and sulfur? Solutions Equations Products Reactants Catalysts

## Step 1: To understand the answer to this problem, it's first important to understand the terms: solutions, equations, products, reactants, and catalysts, and their meanings in the context of chemistry. - **Solutions**: Solutions are homogeneous mixtures composed of two or more substances. They hold no context here.- **Products**: In a chemical reaction, the products are the chemicals formed as a result of the reaction.- **Equations**: Equations express the relation between different derivative products in a defined system; hence, irrelevant in this context.- **Reactants**: These are substances that change into other substances through a chemical reaction.- **Catalysts**: Substances which are added to speed up the reactions are called catalysts. ## Step 2:In your problem, you have a chemical equation: iron + sulfur iron sulfide. To find what role iron and sulfur play, we need to recognize where they are positioned in the equation. ### Key Point Note: In a chemical reaction, the substances before the chemical reaction arrow are reactants and those after the arrow are products.## Step 3:By applying the key point from step 2, it’s clear to see that both iron and sulfur are on the left-hand side of the arrow which reflects that both iron and sulfur are the substances changing in this reaction (from iron and sulfur to iron sulfide). We can thus conclude that iron and sulfur were the *reactants* in the given equation.