What is a chemical change?
Physical and Chemical Changes

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Science
•
6th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A chemical change is a process where substances combine or break apart to form new substances with different properties.
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.
3.
FLASHCARD QUESTION
Front
Example of a chemical change: Rust formation on a nail.
Back
Rust is formed when iron reacts with oxygen in the presence of moisture, creating iron oxide.
4.
FLASHCARD QUESTION
Front
Example of a physical change: Melting butter.
Back
Melting butter changes its state from solid to liquid but does not change its chemical composition.
5.
FLASHCARD QUESTION
Front
What happens during baking a cake?
Back
Baking a cake is a chemical change because it involves a series of reactions that transform the batter into a new substance.
6.
FLASHCARD QUESTION
Front
Is souring milk a chemical or physical change?
Back
Souring milk is a chemical change because it involves the fermentation of lactose into lactic acid.
7.
FLASHCARD QUESTION
Front
What is an example of a physical change?
Back
An example of a physical change is freezing water into ice.
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