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Which of the following is NOT an example of homogenous mixture?
Copper sulphate powder in water
Sugar dissolved in water
Salt dissolved in water
Oil in water
Oil in water
A homogeneous mixture has a uniform composition throughout its mass. Sugar dissolved in water, salt dissolved in water, and copper sulphate powder in water form true solutions where solute particles are uniformly distributed at the molecular level, rendering them homogeneous. In contrast, oil in water forms a heterogeneous mixture (an emulsion) where oil droplets remain distinct and do not dissolve uniformly.
A homogeneous mixture has a uniform composition throughout its mass. Sugar dissolved in water, salt dissolved in water, and copper sulphate powder in water form true solutions where solute particles are uniformly distributed at the molecular level, rendering them homogeneous. In contrast, oil in water forms a heterogeneous mixture (an emulsion) where oil droplets remain distinct and do not dissolve uniformly.
Stirring a spoonful of sugar into hot tea until completely dissolved creates a sweet mixture that tastes uniform from the first sip to the last (homogeneous). Pouring cooking oil into water forms floating droplets of oil that you can clearly see as a separate layer (heterogeneous).
HOMO means SAME тАФ everything looks the same throughout! HETERO means DIFFERENT тАФ you can see separate parts.
True┬аSolution\rightarrow Homogeneous┬а(Particle┬аsize┬а<1┬аnm)
Emulsion/Suspension\rightarrow Heterogeneous┬а(Particle┬аsize┬а>100┬аnm)
Homogeneous mixtures, such as true solutions, possess the same properties and composition at any given point in the container because the solute particles (size < 1 nm) are completely and evenly dispersed within the solvent. Conversely, oil and water are immiscible liquids with different polarities (water is polar, oil is non-polar), preventing them from mixing uniformly and resulting in separate visible phases.
Homogeneous mixtures have uniform composition and properties throughout (e.g., true solutions like salt water, sugar water, and aqueous copper sulphate).
Heterogeneous mixtures have distinct phase boundaries and non-uniform composition (e.g., oil in water, chalk powder in water, sand and water).
Copper sulphate (CuSO4тАЛ) dissolves in water to form a clear, uniform blue true solution, which is homogeneous.
Oil is immiscible in water due to differing chemical polarities, forming an emulsion (heterogeneous mixture).
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