Question

this passage describes a chemical reaction. read the passage. then, follow the instructions below. people have used silver (ag) throughout history to make jewelry and silverware. silver items are valued for their shiny appearance, but over time, they can become dull. the dullness comes from a layer of tarnish that gradually forms on the surface of silver items. tarnish, which is made of silver sulfide (ag2s), forms when silver combines with hydrogen sulfide (h2s) from the air. fortunately, you can remove tarnish by polishing silver. complete the table to classify the substances in this chemical reaction. substance reactant product hydrogen sulfide (h2s) silver (ag) silver sulfide (ag2s)

Explanation:

Step1: Identify reactants

Reactants are substances that participate in a chemical - reaction and are present at the start. Silver (Ag) and hydrogen sulfide ($H_2S$) are the starting substances in the tarnishing reaction of silver.

Step2: Identify product

The product is the substance formed as a result of the chemical reaction. Silver sulfide ($Ag_2S$) is formed when silver reacts with hydrogen sulfide.

Answer:

Substance	Reactant	Product
Hydrogen sulfide ($H_2S$)	Yes	No
Silver sulfide ($Ag_2S$)	No	Yes