Curriculum
Course: Science — Second Preparatory
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Curriculum

Science — Second Preparatory

Unit 1: Matter and Energy

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Unit 2: Matter and Chemical Reactions

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Unit 3: Energy Flow in Photosynthesis and Respiration

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Unit 4: Geological Processes

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Quiz

The Chemical Equation — Lesson quiz

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  • Questions count: 2
  • Passing grade: 60%
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1.
Balance Mg + O₂ → MgO.
Mg + O₂ → 2MgO
2Mg + 2O₂ → 2MgO
Mg + 2O₂ → MgO₂
2Mg + O₂ → 2MgO
2.
Balance CH₄ + O₂ → CO₂ + H₂O.
CH₄ + O₂ → CO₂ + H₂O
CH₄ + 2O₂ → CO₂ + H₂O
CH₄ + 2O₂ → CO₂ + 2H₂O
2CH₄ + 4O₂ → 2CO₂ + H₂O
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