When reactants are in different states of matter the reaction is called heterogeneous.
Example: CaCO3 (solid) + H2SO4 (liquid) = CaSO4 (s)+ H2O(l) + CO2(g)
Heterogeneous refers to something that is composed of different or diverse elements. For example, a heterogeneous mixture is one in which the components are not uniform throughout. Heterogeneous can also describe a group of individuals with varied characteristics.
Heterogeneous matter has parts with different characteristics.
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Heterogenous mixture
In very fast heterogeneous reactions, the controlling factor is typically the rate of mass transfer of reactants to the reaction surface, rather than the intrinsic chemical reaction rate at the surface. This is because the reaction rate is limited by how quickly reactants can reach the surface and participate in the reaction. Improving mass transfer, for example by increasing surface area or stirring the system, can enhance the overall reaction rate.
A heterogeneous mixture is composed of two or more components that are not evenly distributed and are easily observable. An example of a heterogeneous mixture is beef stew.
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An example would be a mixture of flour and water. Heterogeneous mixtures have two different phases.
a heterogeneous mixture.