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Questions and Answers
What is a chemical property?
What is a chemical property?
A property of matter that describes a substance's ability to participate in chemical reactions.
What does the term reactivity mean?
What does the term reactivity mean?
Reactivity describes the ability of two or more substances to combine and form one or more new substances.
What is a chemical change?
What is a chemical change?
A change that occurs when one or more substances change into entirely new substances with different properties.
How does a chemical change differ from a chemical property?
How does a chemical change differ from a chemical property?
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Rusting is an example of a:
Rusting is an example of a:
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Which of the following is a characteristic property?
Which of the following is a characteristic property?
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Give two examples of chemical properties.
Give two examples of chemical properties.
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What kind of change occurred to the Statue of Liberty?
What kind of change occurred to the Statue of Liberty?
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How can you tell the difference between a physical and a chemical property?
How can you tell the difference between a physical and a chemical property?
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Describe the difference between physical and chemical changes.
Describe the difference between physical and chemical changes.
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Identify two physical properties and two chemical properties of a bag of microwave popcorn.
Identify two physical properties and two chemical properties of a bag of microwave popcorn.
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Study Notes
Chemical Properties and Changes
- Chemical property describes a substance's potential to engage in chemical reactions.
- Reactivity indicates how easily substances can combine to form new ones.
- A chemical change results in the formation of new substances with distinct properties.
Distinctions Between Properties and Changes
- Chemical changes involve transformations into new substances; chemical properties predict these changes.
- Rusting exemplifies a chemical change as iron reacts with oxygen, resulting in rust.
Characteristic Properties
- Characteristic properties, such as density and solubility, help identify substances regardless of their quantity.
Examples of Chemical Properties
- Reactivity of iron with oxygen results in rust formation.
- Flammability of firewood, which can ignite and produce ash and heat, is another chemical property.
Real-World Example: The Statue of Liberty
- The change in color from copper to green signifies a chemical change due to the formation of new copper compounds.
Observing Properties
- Physical properties, like shape and temperature, can be measured without altering the substance.
- Chemical properties can only be assessed during a chemical change.
Comparison of Changes
- Physical changes alter a substance's form but not its identity.
- Chemical changes transform the substance's identity and features.
Application to Microwave Popcorn
- Before popping, physical properties include a flat, cool bag, while its flammable nature serves as a chemical property.
- After popping, the bag is hot and expanded physically, while chemically it shows the transformation of kernels into fluffy popcorn.
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Description
Test your knowledge with these flashcards on chemical properties and changes. This quiz covers key terms like reactivity and chemical change, providing definitions and examples. Enhance your understanding of the basic concepts of matter and its interactions.
