Chemical Reactions Quiz
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Questions and Answers

What is a chemical reaction?

A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another.

What is nuclear chemistry?

Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes can occur.

What are reactants or reagents in a chemical reaction?

The substance (or substances) initially involved in a chemical reaction are called reactants or reagents.

What is a chemical reaction?

<p>A process that leads to the chemical transformation of one set of chemical substances to another.</p> Signup and view all the answers

How are chemical reactions usually characterized?

<p>Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants.</p> Signup and view all the answers

What do reactions often consist of?

<p>Reactions often consist of a sequence of individual sub-steps, the so-called elementary reactions.</p> Signup and view all the answers

What does nuclear chemistry involve?

<p>The chemical reactions of unstable and radioactive elements where both electronic and nuclear changes can occur.</p> Signup and view all the answers

What are the substances initially involved in a chemical reaction called?

<p>Reactants or reagents.</p> Signup and view all the answers

What do chemical reactions usually yield?

<p>One or more products, which usually have properties different from the reactants.</p> Signup and view all the answers

What is the difference between chemical reactions and nuclear chemistry?

<p>Chemical reactions involve changes in electron positions and chemical bonds, while nuclear chemistry involves the reactions of unstable and radioactive elements with both electronic and nuclear changes.</p> Signup and view all the answers

What are chemical reactions usually characterized by?

<p>A chemical change.</p> Signup and view all the answers

What are the products of a chemical reaction and how do they differ from the reactants?

<p>The products of a chemical reaction are substances with properties different from the reactants.</p> Signup and view all the answers

What are elementary reactions in the context of chemical reactions?

<p>Elementary reactions are individual sub-steps that make up a sequence of reactions.</p> Signup and view all the answers

What is the role of a chemical equation in describing a chemical reaction?

<p>A chemical equation is used to describe the changes in chemical substances during a reaction.</p> Signup and view all the answers

How can chemical reactions be characterized and what do they yield?

<p>Chemical reactions are characterized by a chemical change and yield one or more products with different properties from the reactants.</p> Signup and view all the answers

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