Comment on the following: a. Sponge though a solid is compressible b. Sugar crystals dissolve faster in hot water than cold water. c. Alloys are considered as homogeneous d. A solution is always liquid.
Answers
Answer:
a. because it has minute holes between them
b. sugar crystal dissolve faster in hot water than cold water because of the the rate of diffusion. when the temperature is higher than the rate of diffusion is also higher and when the temperature is low the rate of diffusion is also low.
c. An alloy may be a solid solution of metal elements (a homogeneous mixture) or a mixture of metallic phases (a heterogeneous mixture of two or more solutions).
d. No,Solutions are not always liquid because solution is a mixture of two homogenous substances.It may be liquid ,solid or gaseous. Example: Solution of alcohol in water is a liquid. Air is a solution of different gas. Alloy is a solution which is in the form of solid.
HOPE IT HELPS
1) sponge through solid is compressible because it has large spaces between them so it can be compressed easily
2) sugar crystals dissolve faster in hot water than cold water because hot water has more energy than cold water as the water is heated the water molecules gain energy they came in contact with sugar
3) alloys are considered as homogenous mixture because the elements that make it up are physically together not chemically that's why it is a mixture join together as a compound to be a plane homogenous mixture is a bunch of molecules so close together
4)A solution is always a liquid yes it is true said because solutions have intermediate interparticular space and intermediate intermolecular force of attraction by which the solution flows and shows property of fluidity and hence the solution can be called a liquid as it is showing the properties of liquid.