Questions and Answers
Is boiling water a physical or chemical change?
What is an example of a physical change?
Boiling water
Is sublimation a physical or chemical change?
What happens during sublimation?
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Is crushing a can a physical or chemical change?
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What is an example of a physical change involving a can?
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When sugar dissolves in water, is it a physical or chemical change?
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What does dissolving sugar in water demonstrate?
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Is mixing sand and water a physical or chemical change?
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What type of change occurs when sand is mixed with water?
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Is breaking glass a physical or chemical change?
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What happens to glass during breaking?
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Is iron rusting a physical or chemical change?
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What process occurs when iron rusts?
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Is rotting bananas a physical or chemical change?
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Why is rotting bananas considered a chemical change?
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Is setting off fireworks a physical or chemical change?
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What type of change occurs when fireworks are set off?
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Is the mixing of vinegar and baking soda a physical or chemical change?
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What happens when vinegar and baking soda mix?
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Is lithium reacting with water a physical or chemical change?
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What type of change occurs when lithium reacts with water?
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Is a chemical battery an example of a physical or chemical change?
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What type of change occurs within a chemical battery?
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Study Notes
Physical Changes
- Boiling water is a physical change as it transitions from liquid to gas without altering its chemical composition.
- Crushing a can results in a physical change; the can maintains its identity but changes shape.
- Dissolving sugar in water represents a physical change since the sugar can be recovered by evaporation.
- Mixing sand and water is a physical change, allowing for the sand to retain its original properties despite wetness.
- Breaking glass is a physical change where the glass remains glass even when fractured into pieces.
Chemical Changes
- Iron rusting is a chemical change due to oxidation, converting iron into iron oxide, which differs in properties.
- Rotting bananas undergo a chemical change as the components break down, resulting in a new material that is no longer a banana.
- Setting off fireworks involves a chemical change characterized by combustion, leading to explosion and transformation of substances.
- Mixing vinegar and baking soda triggers a chemical change, producing a reaction that results in new substances and gas emissions.
- Lithium reacting with water is a chemical change as it alters the compounds involved, forming new substances upon reaction.
Important Notes
- Physical changes are typically reversible, allowing original substances to be retrieved, while chemical changes result in new substances that cannot be easily reverted.
- The distinction between physical and chemical changes helps in understanding the reactions and states of matter involved in everyday processes.
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Description
Test your knowledge of physical and chemical properties with these flashcards. Each card presents a term and explores whether it represents a physical or chemical change, along with examples. Perfect for students studying chemistry concepts!
