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Questions and Answers
What type of chemical reaction involves two or more simple substances combining to form a compound substance?
What type of chemical reaction involves two or more simple substances combining to form a compound substance?
In which type of chemical reaction does a compound substance break apart into simpler substances?
In which type of chemical reaction does a compound substance break apart into simpler substances?
What occurs in a single displacement chemical reaction?
What occurs in a single displacement chemical reaction?
Which type of chemical reaction involves compound substances swapping places with each other?
Which type of chemical reaction involves compound substances swapping places with each other?
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When elements burn to produce oxides, what type of chemical reaction is this?
When elements burn to produce oxides, what type of chemical reaction is this?
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Which rule states that mass cannot be created or destroyed in a chemical reaction?
Which rule states that mass cannot be created or destroyed in a chemical reaction?
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What does acidity refer to?
What does acidity refer to?
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How is acidity commonly measured?
How is acidity commonly measured?
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What does oxidation state indicate?
What does oxidation state indicate?
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In terms of acidity, what do lower pH numbers represent?
In terms of acidity, what do lower pH numbers represent?
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What is the role of a base in a solution?
What is the role of a base in a solution?
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How do electron-rich atoms tend to behave in terms of charge?
How do electron-rich atoms tend to behave in terms of charge?
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Which type of property describes a substance's ability to resist decomposition upon heating?
Which type of property describes a substance's ability to resist decomposition upon heating?
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What category of properties focuses on how a substance interacts with its surrounding medium?
What category of properties focuses on how a substance interacts with its surrounding medium?
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Which set of properties are observed during a chemical reaction and determine a substance's potential reactivity?
Which set of properties are observed during a chemical reaction and determine a substance's potential reactivity?
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A substance that degrades quickly upon heating exhibits:
A substance that degrades quickly upon heating exhibits:
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When discussing the acidity of a substance, which category of properties is being examined?
When discussing the acidity of a substance, which category of properties is being examined?
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Which property set is associated with the tendency of a substance to undergo reactions involving electron transfer?
Which property set is associated with the tendency of a substance to undergo reactions involving electron transfer?
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Study Notes
Types of Chemical Reactions
Chemical reactions involve the formation or breaking of chemical bonds between atoms, changing chemical substances into others. There are several main categories of chemical reactions:
- Combination: Two or more simple substances combine to form a compound substance. Example: Hydrogen gas combines with chlorine gas to produce hydrochloric acid.
- Decomposition: A compound substance breaks apart into simpler substances. Example: Water decomposes into hydrogen and oxygen gases through electrolysis.
- Single displacement: One element replaces another in a compound substance. Example: Silver iodide reacts with copper sulfate, producing silver sulfide and copper iodide.
- Double replacement: Compound substances swap places with each other. Example: Lead nitrate reacts with potassium chloride, producing lead chloride and potassium nitrate.
- Combustion: Elements burn to produce oxides. Example: Charcoal burns in air to produce carbon dioxide and steam.
- Acid-base neutralization: Acids and bases react to form salts and water. Example: Vinegar (acetic acid) mixed with baking soda (sodium hydrogen carbonate) produces sodium acetate, water, and carbon dioxide.
These reactions follow rules like the Law of Conservation of Mass, which states that mass cannot be created or destroyed in a chemical reaction. Therefore, the total weight of the reactants before a reaction equals the combined weights of the products after the reaction.
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Description
Learn about the main categories of chemical reactions, including combination, decomposition, single displacement, double replacement, combustion, and acid-base neutralization. Understand the rules governing chemical reactions, such as the Law of Conservation of Mass.
