What is a chemical change?
M1 Review Chemical and Physical Changes

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•
Chemistry
•
11th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A chemical change is a process where substances transform into different substances with new chemical properties, often involving a reaction that alters the molecular structure.
2.
FLASHCARD QUESTION
Front
What is a physical change?
Back
A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition, such as changes in state, shape, or size.
3.
FLASHCARD QUESTION
Front
Example of a chemical change: Ripening of bananas.
Back
The ripening of bananas involves a chemical change as the fruit undergoes a transformation in its chemical composition, resulting in a change in color and taste.
4.
FLASHCARD QUESTION
Front
Example of a physical change: Breaking glass.
Back
Breaking glass is a physical change because it alters the shape and size of the glass without changing its chemical structure.
5.
FLASHCARD QUESTION
Front
What happens during the combustion of LPG?
Back
The combustion of Liquefied Petroleum Gas (LPG) is a chemical change as it reacts with oxygen to produce carbon dioxide and water, releasing energy.
6.
FLASHCARD QUESTION
Front
Is melting ice a chemical or physical change?
Back
Melting ice is a physical change because it changes from solid to liquid without altering its chemical composition (H2O remains H2O).
7.
FLASHCARD QUESTION
Front
What is an indicator of a chemical change?
Back
Indicators of a chemical change include color change, gas production, temperature change, and the formation of a precipitate.
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