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: 1
  • Passing grade: 60%
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1.
Balance Zn + HCl → ZnCl₂ + H₂.
Zn + 2HCl → ZnCl₂ + H₂
Zn + HCl → ZnCl₂ + H₂
2Zn + HCl → ZnCl₂ + 2H₂
Zn + 2HCl → ZnCl₂ + 2H₂