Final answer:
The symbol that indicates a mixture in a chemical equation is (aq), which stands for aqueous and is used when a substance is dissolved in water. Other state symbols include (s) for solid, (l) for liquid, and (g) for gas.
Step-by-step explanation:
In a chemical equation, symbols are used to indicate the physical states of the substances involved. The symbol that indicates a mixture is (aq), which stands for aqueous. This abbreviation is used when a substance is dissolved in water, which creates a homogeneous mixture. For example, if sodium chloride is dissolved in water the equation may show NaCl(aq), suggesting it's a mixture of NaCl in water. Other symbols include (s) for solid, (l) for liquid, and (g) for gas. These symbols provide additional information about the reactants and products in a chemical equation.
Understanding this notation is crucial as it helps predict the properties and behavior of the substances during a reaction. For instance, if a solid reacts with a liquid to produce a gas and an aqueous solution, it could be represented as:
CompoundA(s) + SolventB(l) → ProductC(g) + ProductD(aq)