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ITBS Level 14 Grade 8 Science
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Avg score: 84% • Most missed: “Is the reaction represented by this equation exothermic or endothermic?”

Directions: Use the information below and your knowledge of science to answer questions.

Consider the following chemical equation, which shows the oxidation of sucrose:
C12H12O11 + 12 O2→ 12 CO2 + 11 H2O + energy (5.64∙103 kJ/mol)

ITBS Level 14 Grade 8 Science
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3 Questions

1. According to this equation, if five molecules of sucrose react with 60 molecules of oxygen, how many molecules of water will be produced?
2. Which of the following is a reactant in the equation?
3. Is the reaction represented by this equation exothermic or endothermic?

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