To call it an physical or chemical change, we first need to describe both of them briefly.
A physical change is the one which does not change the chemical properties of a substance.
A chemical change is the one which changes the chemical properties of a substance. Whether they can be recovered or not is not of importance here.
So if you mean to dissolve some powder in hot water such that it does not make any reaction with water, then its a physical change. (Mixing flour or salt or sugar powder are examples)
However if you put some powder in hot water which creates a reaction and the molecules of that powder are no longer the same, then it would be a chemical change. (Adding tiny sodium or potassium pieces to water are examples)
Mixing lemonade powder into water is a physical change. This is because the lemonade powder dissolves in the water, forming a homogeneous mixture without altering the chemical composition of the lemonade powder itself. No new substances are formed during this process, so it is considered a physical change.
Because making gravy merely involves dissolving the powder in water, it is classified as a physical change. This is due to the fact that neither the powder, nor the water are undergoing and change in chemical properties.
The change is a physical one because the powder is simply dissolving into the water, and it could be powdered again by removing the water again. The physical properties of the fruit punch are very different, but not a chemical change unless there is a new substance created or precipitated.
mixing vinegar and baking powder:)
Plaster of Paris is formed from gypsum. The gypsum is heated to 150 decrees Celsius and becomes a dry powder. When this powder is mixed with water it re-forms into a paste and eventually hardens into a solid. The powder mixed with water is held together by hydrogen bonds in the water molecules. This is a week bond that is easily broken. When Plaster of Paris and water are mixed together they undergo a chemical change. The particles rearrange to make a completely new substance. When plaster of Paris and water are mixed together the mixture becomes warm releasing energy in the form of heat therefore undergoing a chemical change.
physical change
Mixing lemonade powder into water is a physical change. This is because the lemonade powder dissolves in the water, forming a homogeneous mixture without altering the chemical composition of the lemonade powder itself. No new substances are formed during this process, so it is considered a physical change.
No it is physical
1. Any chemical reactions - a physical phenomenon.2. Mixing when chemical reactions are implicated - chemical change (depending on the type of the liquid and powder).
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.
Yes, mixing lemonade powder into water is a physical change because no new substances are formed. The lemonade powder dissolves in the water but can still be separated through physical means such as filtration or evaporation to obtain the original substances.
Any chemical reactions - a physical phenomenon. To discuss a chemical change please mention the two chemicals.
mixing baking soda with water is a physical change b/c you don't change the chemical structure mixing baking soda with vinegar is a chemical change b/c you change the chemical structure ================= It is definitely a chemical reaction resulting in a chemical change.
Crushing charcoal into powder is a physical change, as it alters the size and shape of the charcoal without changing its chemical composition.
Yes.
Physical change, because you are not permanently changing the substance. Also you can change the two substances back to how they originally were
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