Of course they do. Some examples are fizzing, when a gas is produced, colour changes, and the formation of precipitates.
It is both a substance and mixture. If you meant "Is hot tea a mixture or compound?" then it is a mixture.
yes
Never visible to naked eye.Visible to light microscope during cell division
The number of protons in the nucleus never changes in a neutral atom. This is because the number of protons determines the element's identity.
When the concentration of the reactants is equal to the concentration of the products and does not change over time, the system has reached dynamic equilibrium. Dynamic equilibrium means that the reaction is still occurring and does not stop. The reaction never reaches completion, because the reverse reaction is moving at the same rate as the forward reaction. The products and reactants are balanced. The reactants are producing at the same speed that the products are changing back into the reactants. When a reaction is in dynamic equilibrium, it is hard to tell that a reaction is occurring. There is no net change in the concentration of the products or reactants because both forward and reverse reactions are moving at the same rate.
It is never milk again. It will just be churds and whey it will never change back. It changes the substances identity.
a leopard never changes its spots
No. From some parts of the world it is NEVER visible.
A homogeneous mixture is a term used to describe a heterogeneous mixture that never settles out. This means that the components of the mixture are evenly distributed throughout and do not separate over time.
The speed of light in a vacuum never changes.
water has a lot of mixture's so the list is never ending!
In a redox reaction the OXIDATION numbers of some of the elements change from the reactants to the products. The numbers of atoms each element never changes in any chemical reaction.
It is both a substance and mixture. If you meant "Is hot tea a mixture or compound?" then it is a mixture.
A small equilibrium constant (Kc) typically indicates that the reaction tends to favor the reactants at equilibrium rather than the products. This suggests that the reaction is not proceeding to a significant extent in the forward direction.
yes
The question looks strange and weird,but this what i can say,a mixture can never be pure,a pure substance can never be a mixture,though we can talk about ,like,pure air or something,but that is not in the strict chemical sense.
Never visible to naked eye.Visible to light microscope during cell division