Physical vs Chemical Changes

Flashcard
•
Biology
•
9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the difference between a physical change and a chemical change?
Back
A physical change alters the form or appearance of a substance without changing its chemical composition, while a chemical change results in the formation of new substances with different chemical properties.
2.
FLASHCARD QUESTION
Front
What are some indicators of a chemical change?
Back
Indicators of a chemical change include a change in color, production of gas, formation of a precipitate, and change in temperature.
3.
FLASHCARD QUESTION
Front
What is an example of a chemical change?
Back
Rusting of iron is an example of a chemical change.
4.
FLASHCARD QUESTION
Front
What is an example of a physical change?
Back
Dissolving sugar in water is an example of a physical change.
5.
FLASHCARD QUESTION
Front
How does temperature change relate to chemical changes?
Back
A temperature change can indicate a chemical change, as energy is either absorbed or released during the breaking or forming of chemical bonds.
6.
FLASHCARD QUESTION
Front
What happens to chemical bonds during a chemical change?
Back
During a chemical change, chemical bonds are broken and new bonds are formed, resulting in the creation of new substances.
7.
FLASHCARD QUESTION
Front
Can a physical change be reversed?
Back
Many physical changes are reversible, such as freezing and melting, but some may not be easily reversible.
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