What is a physical change?
Types of Chemical Reactions

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Science
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9th - 10th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include changes in state (like melting or freezing), shape, or size.
2.
FLASHCARD QUESTION
Front
What is a chemical change?
Back
A chemical change is a change that results in the formation of new chemical substances. It involves breaking and forming bonds between atoms. Examples include rusting of iron and burning of wood.
3.
FLASHCARD QUESTION
Front
What is decomposition in chemistry?
Back
Decomposition is a type of chemical reaction where a single compound breaks down into two or more simpler substances.
4.
FLASHCARD QUESTION
Front
What is a synthesis reaction?
Back
A synthesis reaction is a type of chemical reaction in which two or more reactants combine to form a single product.
5.
FLASHCARD QUESTION
Front
What is a double replacement reaction?
Back
A double replacement reaction is a type of chemical reaction where two compounds exchange ions or bonds to form two new compounds.
6.
FLASHCARD QUESTION
Front
What is combustion?
Back
Combustion is a chemical reaction that occurs when a substance reacts rapidly with oxygen, releasing energy in the form of light and heat.
7.
FLASHCARD QUESTION
Front
What is an example of a physical change?
Back
An example of a physical change is getting a haircut, where the hair's physical appearance changes but its chemical composition remains the same.
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