0
No because if you put water in a pan and then ad coffee powder and evaporate it the coffee powder won't evaporate with it.
If the powder does not settle to the bottom if left undisturbed for a while, then it is in solution (dissolved). Solutions can be of either a physical or chemical nature. Salt water is a solution as well, despite that salt will be left behind if the water evaporates.
No, dissolving coffee powder in hot water is a physical change. The coffee powder does not undergo a chemical reaction when it dissolves in water; it simply disperses evenly throughout the water to form a solution.
yes because the coffee blends in with the water (h20) and it is also cloudy and misty
this is coming from a 12 year old boy who comes from hulme hall grammer school in cheadle hulme my name is christopher
Only instant coffee granules are water soluble. Regular coffee grounds are "woody" and do not dissolve in water. Hot water will make the components in coffee granules come out, but parts of the beans will remain.
Dissolving is generally an endothermic process, meaning that it requires energy to go to completion. Considering the dissolving/disassociation "reaction," the final energy state is higher than the initial. Therefore, adding heat to the system (in this case, your coffee) will shift the reaction to the right (toward the dissolved, steaming, delicious product).
Another way to see it would be in terms of crystal lattices. The molecules that make up your coffee powder are actually in a lattice of individual molecules. The intermolecular forces aren't particularly strong in this case (as opposed to something like table salt, which is an ionic crystal lattice), but they are still strong enough such that some energy is required to break them apart. That energy is provided through the heat of the water.
No, it is not a chemical reaction. It is a physical reaction. The coffee is not actually changing as you could let the coffee sit for a long time and it would be like it was in the beginning.
Add your answer:
Earn +20 pts
Is dissolving powder into water a chemical change?
No, dissolving powder into water is a physical change, not a chemical change. The powder molecules are still the same chemical compounds as they were before dissolving, just dispersed in the water molecules.
Is dissolving milo into hot water a physical change?
The instant coffee and the water have not changed chemically or physically. It becomes a mixture, not a solution; the water is separate from the coffee powder. Therefore it is not a physical change.
Which of them is a reversible change coffee dissolving Water boinling Chocolate melting wood burning?
The reversible change is coffee dissolving in water. Boiling water, melting chocolate, and burning wood are irreversible changes.
Is mixing coffee with hot water a physical or chemical change?
Mixing coffee with hot water is a physical change because the individual substances (coffee and water) retain their chemical identities and only the physical state of the coffee changes, dissolving in the water. No new substances are formed.
Is there a new substance when you mixed the coffee powder and water?
When you mix coffee powder and water, no new substance is created. The coffee powder dissolves in the water to create a coffee solution, but the individual coffee particles are still present.
Is dissolving powder into water a chemical change?
No, dissolving powder into water is a physical change, not a chemical change. The powder molecules are still the same chemical compounds as they were before dissolving, just dispersed in the water molecules.
Is coffee dissolving in water a physical or chemical change?
It is a physical change. Dissolving is a physical property called solubility.
Is dissolving milo into hot water a physical change?
The instant coffee and the water have not changed chemically or physically. It becomes a mixture, not a solution; the water is separate from the coffee powder. Therefore it is not a physical change.
Which of them is a reversible change coffee dissolving Water boinling Chocolate melting wood burning?
The reversible change is coffee dissolving in water. Boiling water, melting chocolate, and burning wood are irreversible changes.
Is mixing coffee with hot water a physical or chemical change?
Mixing coffee with hot water is a physical change because the individual substances (coffee and water) retain their chemical identities and only the physical state of the coffee changes, dissolving in the water. No new substances are formed.
How is because does coffee or powdered juice dissolve in hot water?
The answer is because you ar
Does coffee powder mix with water?
Coffee powder is partially soluble in water.
Is there a new substance when you mixed the coffee powder and water?
When you mix coffee powder and water, no new substance is created. The coffee powder dissolves in the water to create a coffee solution, but the individual coffee particles are still present.
What do sugar salt dissolving in coffee?
Dissolved in water containing coffee, not in coffee.
Is dissolving in water a chemical change?
Dissolving in water is a physical change.
Is dissolving suger in hot water a chemical or physical?
Dissolving sugar in hot water is a chemical change.
Is kool-aid powder dissolving in water a physical or chemical change?
The dissolving of Kool-Aid powder in water is a physical change because the powder is simply mixing with the water to form a solution. No new substances are being created through a chemical reaction.
