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Questions and Answers
What is the process of freezing water into ice cubes?
What is the process of freezing water into ice cubes?
What happens during boiling water?
What happens during boiling water?
What type of reaction is evaporation?
What type of reaction is evaporation?
What type of reaction does condensation on the outside of a cold drink represent?
What type of reaction does condensation on the outside of a cold drink represent?
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What process is represented by melting chocolate?
What process is represented by melting chocolate?
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What type of reaction occurs during baking a cake?
What type of reaction occurs during baking a cake?
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What is the process involved in cooking an egg?
What is the process involved in cooking an egg?
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What type of reaction occurs when burning methane gas in a Bunsen burner?
What type of reaction occurs when burning methane gas in a Bunsen burner?
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What type of reaction is burning a candle?
What type of reaction is burning a candle?
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What is the type of reaction when you see light from a glow stick?
What is the type of reaction when you see light from a glow stick?
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What type of reaction is shown by the glow from bioluminescent organisms such as fireflies?
What type of reaction is shown by the glow from bioluminescent organisms such as fireflies?
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What type of reaction occurs during photosynthesis?
What type of reaction occurs during photosynthesis?
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What happens during cellular respiration?
What happens during cellular respiration?
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What type of reaction is lighting a match?
What type of reaction is lighting a match?
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What type of reaction occurs when activating a cold pack?
What type of reaction occurs when activating a cold pack?
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What type of reaction occurs during a baking soda and vinegar reaction?
What type of reaction occurs during a baking soda and vinegar reaction?
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What type of reaction is represented by air-activated hand warmers?
What type of reaction is represented by air-activated hand warmers?
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What type of reaction represents a chemical reaction that feels cold?
What type of reaction represents a chemical reaction that feels cold?
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What happens during a chemical reaction that feels warm?
What happens during a chemical reaction that feels warm?
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What type of reaction occurs when dry ice forms 'fog'?
What type of reaction occurs when dry ice forms 'fog'?
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Study Notes
Exothermic Processes
- Freezing Water into Ice Cubes: Molecules lose energy transitioning from liquid to solid.
- Condensation: Occurs when vapor turns into liquid, requiring molecules to lose energy.
- Burning Methane Gas: Activation energy (spark) is less than the energy released, evident as thermal and radiant energy.
- Burning a Candle: The activation energy from a match is minimal compared to the energy released as heat and light.
- Glow Stick Reaction: Produces mostly radiant energy with some thermal energy released.
- Bioluminescent Organisms: Such as fireflies, emit radiant energy with minor thermal output.
- Cellular Respiration: Consumers break down food, releasing more thermal energy than ingested.
- Lighting a Match: Releases more thermal energy than needed to initiate combustion.
- Air Activated Hand Warmers: Chemical reaction results in the release of thermal energy into the environment.
- Warm Chemical Reactions: Indicate that thermal energy is released to the surroundings.
Endothermic Processes
- Boiling Water: Requires molecules to gain energy to transition from liquid to gas.
- Evaporation: Similar to boiling, involves molecules gaining energy to become gas.
- Melting Chocolate: Involves molecules gaining energy to transition from solid to liquid.
- Baking a Cake: Requires input of thermal energy for the reaction to occur.
- Cooking an Egg: More energy is necessary to facilitate the chemical changes during cooking.
- Activating a Cold Pack: Absorbs thermal energy, creating a cooling effect due to transformation into chemical energy.
- Baking Soda and Vinegar Reaction: This reaction feels cold as thermal energy is absorbed and transformed.
- Cold Chemical Reactions: Indicate that thermal energy is absorbed during the process.
- Dry Ice Formation: The sublimation of dry ice creates "fog," requiring energy gain to transition from solid to gas.
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Description
Explore the concepts of exothermic and endothermic processes through this quiz. Learn how energy transfer affects states of matter, such as freezing, boiling, evaporation, and condensation. Perfect for students studying thermodynamics or physical chemistry.
