physical- there's no chemical change.
It is a chemical change
Mixing flour and baking soda is a physical change; the process of mixing them together does not in itself cause them to change into any other chemical. However, when the pastry is baked, then there will be chemical changes.
This is a physical change due to the fact that you are adding two substances.
its a chemical change because you cannot reverse the process and just have milk and vinegar separate
yes because salad dressing is a suspension of vinegar that will separate into layers if left undisturbed.
It is a chemical change. CH3COOH (vinegar) + NaHCO3 (baking soda) -> CH3COONA (sodium acetate) + H2CO3 (carbonic acid)...which then immediately dissociates to... H2CO3 -> H2O + CO2
Chemical it gives of gas
Yes.
Physical
It depends on what you are mixing it with.
it is a chemical change
physical :)