Chemical Reactions
Flashcard
•
Chemistry
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a chemical reaction?
Back
A process where substances (reactants) are transformed into new substances (products) through the breaking and forming of chemical bonds.
2.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
In a chemical reaction, mass is neither created nor destroyed; the total mass of reactants equals the total mass of products.
3.
FLASHCARD QUESTION
Front
What is a coefficient in a chemical equation?
Back
A number placed in front of a chemical formula to indicate how many molecules or moles of that substance are involved in the reaction.
4.
FLASHCARD QUESTION
Front
What type of reaction is represented by the equation: 2H₂ + O₂ → 2H₂O?
Back
Synthesis reaction, where two or more reactants combine to form a single product.
5.
FLASHCARD QUESTION
Front
What is a decomposition reaction?
Back
A type of chemical reaction where a single compound breaks down into two or more simpler products.
6.
FLASHCARD QUESTION
Front
What is a combustion reaction?
Back
A chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light and heat.
7.
FLASHCARD QUESTION
Front
What is a single replacement reaction?
Back
A reaction where one element replaces another element in a compound.
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