It would not be a colloid, it would be a suspension.
You may be thinking of a roux.
flour & cocoa
two mixtures are hot chocolate and juice or vinegar and lemonade.
At random:milkmortarclaysmogice cream
Vinegar from supermarkets is a mixture of water and acetic acid, PURE acetic acid/vinegar is a compound.
When you mix flour and vinegar you get a sort of paste like when it is mixed with water. Gooey, wet and smelling like vinegar. The smell is stronger depending on your measurements. If you put too little vinegar you'll be left with still some regular powdery flour.
flour will become solid and some flour particles will float
There is no chemical reaction between flour and vinegar. However it will produce an acidic paste dough that will look not much different from an ordinary flour and water paste dough.
All types of flours are mixtures of compounds.
Examples of 5 heterogeneous mixtures are milk and cereal, rocks in water, Pizza, soil, and vinegar and oil. These are mixtures that have separate components.
Examples: air, whine, brine, vodka, vinegar etc.
You must have something to predict upon for instance 'what will happen when we add flour to vinegar?'You need to predict what will happen by starting with :If....then....because.If we add vinegar to flour then.... because....