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Questions and Answers
What type of reaction is represented by the formation of hydrogen gas?
What type of reaction is represented by the formation of hydrogen gas?
- Gas-evolution reaction (correct)
- Color change reaction
- Exothermic reaction
- Endothermic reaction
Which type of reaction is characterized by the formation of a precipitate?
Which type of reaction is characterized by the formation of a precipitate?
- Endothermic reaction
- Exothermic reaction (correct)
- Gas-evolution reaction
- Color change reaction
What is the term for a chemical change that is often accompanied by external indications or characteristics?
What is the term for a chemical change that is often accompanied by external indications or characteristics?
- Endothermic reaction
- Color change reaction
- Exothermic reaction
- Asterial traction (correct)
What is the term for a chemical reaction that proceeds with the evolution of heat energy?
What is the term for a chemical reaction that proceeds with the evolution of heat energy?
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What type of reaction proceeds with the absorption of heat energy?
What type of reaction proceeds with the absorption of heat energy?
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Study Notes
Types of Chemical Reactions
- The formation of hydrogen gas represents a chemical decomposition reaction.
- The formation of a precipitate characterizes a precipitation reaction.
- A chemical change that is often accompanied by external indications or characteristics is called a visible reaction.
- A chemical reaction that proceeds with the evolution of heat energy is called an exothermic reaction.
- A chemical reaction that proceeds with the absorption of heat energy is called an endothermic reaction.
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