What is a chemical change?
Chemical and Physical Changes

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•
Science
•
5th 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. Examples include baking a cake, rusting iron, and burning wood.
2.
FLASHCARD QUESTION
Front
What is a physical change?
Back
A physical change is a process that alters the form or appearance of a substance but does not change its chemical composition. Examples include melting ice, dissolving sugar, and breaking glass.
3.
FLASHCARD QUESTION
Front
What happens to the properties of a substance during a chemical change?
Back
The properties of the original substances change completely, resulting in new substances with different physical and chemical properties.
4.
FLASHCARD QUESTION
Front
What happens to the weight of matter during a chemical change?
Back
The weight of matter stays the same during a chemical change, as mass is conserved.
5.
FLASHCARD QUESTION
Front
What is an example of a physical change?
Back
Dissolving sugar in water is an example of a physical change because the sugar can be recovered.
6.
FLASHCARD QUESTION
Front
What is an example of a chemical change?
Back
Baking a cake is an example of a chemical change because new substances are formed that cannot be reversed.
7.
FLASHCARD QUESTION
Front
What is rusting?
Back
Rusting is a chemical change that occurs when iron reacts with oxygen and moisture in the air, forming iron oxide.
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