Chemistry Chapter 9 Flashcards

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Questions and Answers

What is a chemical reaction?

The process by which the atoms of one or more substances are rearranged to form different substances (correct)

A reaction that only occurs in the presence of heat

The process by which one substance is formed from another

A type of mixture of elements

What are reactants?

The starting substances in a chemical reaction.

What are products?

The substances formed during a chemical reaction.

What is a chemical equation?

A statement that uses chemical formulas to show the identities and relative amounts of the substances involved in a chemical reaction. Signup and view all the answers

What is a coefficient in a chemical equation?

The number written in front of a reactant or product in a chemical equation. Signup and view all the answers

What is a synthesis reaction?

A chemical reaction in which two or more substances react to produce a single product. Signup and view all the answers

What defines a combustion reaction?

When oxygen combines with a substance and releases energy in the form of heat and light. Signup and view all the answers

What is a decomposition reaction?

A reaction in which a single compound breaks down into two or more elements or new compounds. Signup and view all the answers

What is a single-replacement reaction?

A reaction in which the atoms of one element replace the atoms of another element in a compound. Signup and view all the answers

What is a double-replacement reaction?

A reaction which involves the exchange of ions between two compounds. Signup and view all the answers

What is a precipitate?

A solid produced during a chemical reaction in a solution. Signup and view all the answers

What are solutes?

A substance that is dissolved in water. Signup and view all the answers

What is an aqueous solution?

A solution that contains one or more substances called solutes. Signup and view all the answers

What is a solvent?

It is the water in an aqueous solution. Signup and view all the answers

What is a complete ionic equation?

An ionic equation that shows all of the particles in a solution as they exist. Signup and view all the answers

What are spectator ions?

Ions that do not participate in a reaction; they exist as both reactants and products. Signup and view all the answers

What is a net ionic equation?

Ionic equations that include only the particles that participate in the reaction; no spectator ions are listed. Signup and view all the answers

Study Notes

Chemical Reactions

Chemical reaction involves the rearrangement of atoms from reactants to form products.
Reactants are the starting substances in a reaction, while products are the resulting substances.

Chemical Equations

A chemical equation represents a reaction using chemical formulas to indicate reactants and products' identities and amounts.
Coefficients are numbers placed in front of reactants or products to balance the equation.

Types of Reactions

Synthesis reaction combines two or more reactants to form a single product, represented as A + B -> AB.
Combustion reaction occurs when a substance reacts with oxygen, releasing energy in heat and light.
Decomposition reaction involves a single compound breaking down into two or more substances, shown as AB -> A + B.
Single-replacement reaction features one element replacing another in a compound, exemplified by A + BX -> AX + B.
Double-replacement reaction entails the exchange of ions between two compounds, represented as AX + BY -> AY + BX.

Solutions and Ions

A precipitate is a solid that forms in a solution during a chemical reaction.
Solutes are substances dissolved in water, forming an aqueous solution.
The solvent is typically water in an aqueous solution.

Ionic Equations

A complete ionic equation details all particles in a solution as they exist.
Spectator ions are ions that do not take part in the reaction; they appear as both reactants and products.
A net ionic equation simplifies the equation by excluding spectator ions, focusing only on the particles involved in the reaction.

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Description

Test your knowledge of key terms related to chemical reactions in chemistry. This quiz covers definitions of fundamental concepts like reactants, products, and chemical equations. Perfect for students reviewing Chapter 9 material.