
Conservation of Matter - Key Concepts
Flashcard
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the Law of Conservation of Matter?
Back
The Law of Conservation of Matter states that matter cannot be created or destroyed in a chemical reaction; it can only change forms.
2.
FLASHCARD QUESTION
Front
What does it mean for a chemical equation to be balanced?
Back
A balanced chemical equation has the same number of each type of atom on both sides of the equation, indicating that matter is conserved.
3.
FLASHCARD QUESTION
Front
Example of a balanced chemical equation: 2Na + Cl₂ → 2NaCl. What does this indicate?
Back
This indicates that 2 sodium atoms react with 1 chlorine molecule to produce 2 sodium chloride molecules, conserving the number of atoms.
4.
FLASHCARD QUESTION
Front
What is a reactant in a chemical reaction?
Back
A reactant is a substance that undergoes change during a chemical reaction.
5.
FLASHCARD QUESTION
Front
What is a product in a chemical reaction?
Back
A product is a substance that is formed as a result of a chemical reaction.
6.
FLASHCARD QUESTION
Front
In the equation CH₄ + 2O₂ → CO₂ + 2H₂O, identify the reactants and products.
Back
Reactants: CH₄ (methane) and O₂ (oxygen); Products: CO₂ (carbon dioxide) and H₂O (water).
7.
FLASHCARD QUESTION
Front
What is the significance of coefficients in a chemical equation?
Back
Coefficients indicate the number of molecules or moles of a substance involved in the reaction, helping to balance the equation.
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