Please answer Its science questions?

Question

1 Have you noticed water collecting on the outside of a glass containing an ice-cold drink? Where did this water come from and why did it collect on the glass?
2 A glass of water is placed next to a puddle that contains the same amount of water. Explain why water in the glass evaporates more slowly than the water in the puddle?
3 Use the kinetic theory to explain why a gas completely fills its containor while a liqued or solid may not

Answer 1

1). water collected on the outside of a glass containing ice cold water comes from air surrounding the glass. the air contains water vapors as one of its component, these vapors when comes in contact with glass containing ice cold water, losses heat and get cooled, thus changed into water droplets, which are collected on the outside of glass containing ice cold water.
2). The water in puddle has more surface area as compared to water in glass. so the amount of sunlight that comes in contact with water is more in puddle as compared to glass, and thus the rate of evaporation is more in puddle as compared to glass.
3). the kinetic energy in between the molecules of gas is more as compared to the molecules of liquids or solids because of very low intermolecular forces. Because of which they tend move faster than that of solid or liquid molecules, and fills the available space easily. Thus a gas completely fills its container while a liquid or solid may not.

Answer 2

1. the water came from the air. it condenses on the glass because the water in the air is no longer able to remain in the air at the low temperature. the water is called condensation like dew.

2. the puddle has higher surface area so it evaporates faster.

3. a gas fills its container because it is bouncing off the walls and other atoms very fast where as in a solid there isn't much movent between atoms and a liquid where there is movement but each atom doesn't have the momentum to escape the gravity (mainly of earth) and surface tension of the body of liquid.
technically it doesn't fill the container since there is alot of space between the atoms.

Answer 3

1) from the moisture in the air, because cold surfaces causes humid air to "sweat out" moisture as condensate.
2) rate of evaporation is constant for a given surface area, so the cup, having a smaller surface area exposed to the air, evaporates more slowly
3) This is a bogus question your teacher gave you. All materials, gas, liquid, or solids, have atoms or molecules that have kinetic energy. The reason why liquids and solids do not "expand to fill the available space" is because they're bound by interatomic or intermolecular bonds, while gases have "free" atoms or molecules that aren't bound. Free to move (having kinetic energy of course, or else it'd be frozen solid at absolute zero!), they randomly expand until all space inside of a closed container is filled with it. Lousy question, your teacher needs to go back to college to learn real physics.

Answer 4

Well, it depends..