What indicates that a chemical reaction has occurred during baking?
Chemical Formulas and Reactions

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Science
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8th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
The ingredients cannot be returned to their original state.
2.
FLASHCARD QUESTION
Front
What is the composition of Fe₂O₃?
Back
It has 2 iron atoms and 3 oxygen atoms.
3.
FLASHCARD QUESTION
Front
What is a physical change?
Back
A change in which the characteristics of a substance are only changed physically and the original properties stay the same.
4.
FLASHCARD QUESTION
Front
What is a chemical equation?
Back
A combination of chemical formulas used to describe what happens in a chemical reaction.
5.
FLASHCARD QUESTION
Front
What is the composition of 6CO₂?
Back
It contains 6 carbon atoms and 12 oxygen atoms.
6.
FLASHCARD QUESTION
Front
What is a chemical reaction?
Back
A process that involves the rearrangement of the molecular or ionic structure of a substance.
7.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
In a chemical reaction, matter is neither created nor destroyed.
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