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Questions and Answers
Which of the following correctly represents the products formed when magnesium reacts with oxygen?
Which of the following correctly represents the products formed when magnesium reacts with oxygen?
What does the symbol Mg in a chemical equation represent?
What does the symbol Mg in a chemical equation represent?
Why is it important to balance a chemical equation?
Why is it important to balance a chemical equation?
During a chemical reaction, what occurs to the bonds of the reactants?
During a chemical reaction, what occurs to the bonds of the reactants?
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When balancing the equation 3Fe + 4H₂O → Fe₃O₄ + 8H₂, which of the following is NOT a step in the balancing process?
When balancing the equation 3Fe + 4H₂O → Fe₃O₄ + 8H₂, which of the following is NOT a step in the balancing process?
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Study Notes
Chemical Reactions and Balancing Equations
- Reactants in Magnesium Oxide Formation: Magnesium and oxygen.
- Product of Magnesium-Oxygen Reaction: Magnesium oxide.
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Chemical Symbols:
- Mg represents magnesium.
- O₂ represents oxygen.
- MgO represents magnesium oxide.
- Balancing Chemical Equations: Necessary to maintain the Law of Conservation of Mass. This means ensuring that the number of atoms for each element is the same on both sides of the equation.
- Chemical Reaction Principle: Atoms are neither created nor destroyed in a chemical reaction. Bonds of the reactants break and new bonds are formed to create products.
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Example Balanced Equation: 3Fe + 4H₂O → Fe₃O₄ + 8H₂
- This equation shows iron reacting with water to form iron(III) oxide and hydrogen gas. The equation balances iron, hydrogen, and oxygen atoms.
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Balancing Steps (Example):
- First balance hydrogen atoms.
- Second balance oxygen atoms.
- Third balance iron atoms.
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Description
This quiz focuses on chemical reactions, particularly the formation of magnesium oxide from magnesium and oxygen. Learn how to balance chemical equations while following the Law of Conservation of Mass and understanding the principles behind chemical reactions. Test your knowledge on the examples provided and the necessary steps for balancing equations.
