16 Questions
What does a chemical equation symbolically represent?
The reactants and products of a chemical reaction
In a chemical equation, where are the product entities typically represented?
On the right-hand side
What do the coefficients next to the symbols and formulas of entities represent in a chemical equation?
The stoichiometric numbers
Who diagrammed the first chemical equation in 1615?
Jean Beguin
Which side of a chemical equation contains the list of reactants?
Left-hand side
What separates multiple substances on any side of a chemical equation?
- sign
How is the chemical equation 2HCl + 2Na → 2NaCl + H2 usually read using IUPAC nomenclature?
Two hydrochloric acid molecules and two sodium atoms react to form two formula units of sodium chloride and a hydrogen gas molecule
Which symbol is used to indicate a solid state of a chemical in a chemical equation?
(s)
What would be the result if gaseous hydrogen chloride were to replace hydrochloric acid as a reactant in the reaction: 2HCl(aq) + 2Na(s) → 2NaCl(aq) + H2(g)?
The reaction would have different thermodynamic and kinetic properties
What symbol is used to indicate the formation of a gas in some cases in a chemical equation?
↑
How is energy in the form of heat added to a chemical reaction in a chemical equation?
Δ
What is used as a symbol for the addition of energy in the form of light in a chemical equation?
hν
How are specific conditions of temperature and pressure indicated in a chemical equation?
Placed on top of the arrow
What is used to denote the use of an acidic or basic medium in a chemical equation?
H+ or OH−
What notation variant is not permitted in standard notation for chemical equations?
-1 stoichiometric coefficients
When might an arrow without parentheses be used in a chemical equation?
To indicate formation of a gas ↑ or precipitate ↓.
Test your knowledge of chemical equations with this quiz that covers the symbolic representation of chemical reactions, including the arrangement of reactant and product entities, the use of coefficients, and the direction of the reaction.
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