Flashcards: Fundamentals of Chemical Reactions and Energy — 9 cards

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1Question

Chemical Reaction Balancing — principle?

Answer

Matter is conserved; only coefficients are changed.

2Question

Matter is conserved — principle?

Answer

Atoms are neither created nor destroyed in reactions.

3Question

Redox Half Equations — electrons?

Answer

Show electron transfer; oxidation loses, reduction gains electrons.

4Question

Coefficients vs subscripts — balancing?

Answer

Adjust coefficients; keep subscripts unchanged.

5Question

Oxygen's form?

Answer

Diatomic molecule: O₂.

6Question

Redox — how?

Answer

Electron transfer during reactions.

7Question

Oxidation — role?

Answer

Loss of electrons.

8Question

Reduction — role?

Answer

Gain of electrons.

9Question

Balancing oxygen atoms?

Answer

Use O₂ molecules, adjust coefficients.

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Test your knowledge with 8 questions on Fundamentals of Chemical Reactions and Energy.

1. What is the main purpose of balancing a chemical equation?

2. What is the main principle behind balancing a chemical reaction equation?

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