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Questions and Answers
What does a chemical equation represent?
What does a chemical equation represent?
- A list of chemical elements
- A mathematical equation for chemical processes
- A chemical reaction using symbols and formulas (correct)
- A structural diagram of a molecule
Where are the reactant entities placed in a chemical equation?
Where are the reactant entities placed in a chemical equation?
- Below the arrow symbol
- Above the arrow symbol
- Right-hand side
- Left-hand side (correct)
Who diagrammed the first chemical equation?
Who diagrammed the first chemical equation?
- Jean Beguin (correct)
- Dmitri Mendeleev
- Marie Curie
- Antoine Lavoisier
What do coefficients next to symbols and formulas represent in a chemical equation?
What do coefficients next to symbols and formulas represent in a chemical equation?
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How are multiple substances on any side of a chemical equation separated?
How are multiple substances on any side of a chemical equation separated?
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Study Notes
Chemical Equations
- A chemical equation represents a chemical reaction, depicting the reactants, products, and direction of the reaction.
- Reactant entities are placed on the left-hand side of the equation.
- The first chemical equation was diagrammed by Jean Beguin, a French chemist, in 1615.
- Coefficients next to symbols and formulas in a chemical equation represent the mole ratio of the reactants and products, indicating the relative amount of each substance required or produced.
- Multiple substances on any side of a chemical equation are separated by a plus sign (+).
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