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Questions and Answers
What is the purpose of the arrow in a chemical equation?
What is the purpose of the arrow in a chemical equation?
- To indicate the state of matter of the substances
- To separate reactants and products
- To show the direction of the reaction (correct)
- To represent the energy change in the reaction
How are multiple substances separated on any side of a chemical equation?
How are multiple substances separated on any side of a chemical equation?
- By a plus sign (correct)
- By a multiplication sign
- By an equal sign
- By a division sign
What do coefficients next to the symbols and formulas of entities represent in a chemical equation?
What do coefficients next to the symbols and formulas of entities represent in a chemical equation?
- Molar mass of the substance
- Atomic number of the substance
- Number of atoms in the substance
- Absolute values of the stoichiometric numbers (correct)
What does the stoichiometric coefficient specify in a chemical equation?
What does the stoichiometric coefficient specify in a chemical equation?
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Who diagrammed the first chemical equation in 1615?
Who diagrammed the first chemical equation in 1615?
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