can u answer these questions
Answers
Answer:
wait for some time......plzzzzzz....
Answer:
1 .No ground water has impurities, minerals, gases and some microbes dissolved in it.
2.Rain water is the purest form of water but due to the pollution of now-a-days the rain water also get contaminated and become polluted. So, for now-a-days distilled water is pure form of water than rainwater.
3.Water boils when the vapor pressure of the water gets to be as big as the pressure of the atmosphere. At that point, vapor bubbles in the water can grow. You have to heat the liquid with solutes up more to get the vapor pressure in it to equal the atmospheric pressure, so it has a higher boiling point.
4.Adding salt to the ice/water mix causes a temperature drop that slows the melting rate and increases the freezing rate . The net result is that the ice melts more and more slowly after the initial addition of salt.
5.The metals which exists as liquids above 30 degree celcius are :- 1)Mercury-(Also in room temperature) 2)Cesium 3)gallium
6.Arsenic, for example, is a metalloid that has the visual appearance of a metal, but is a poor conductor of electricity; metalloids are generally semiconductors. The elements classified as metalloids are boron, silicon, germanium, arsenic, antimony, tellurium, and polonium.
7.The example is the the mixture of ethanol in water...... in which the both solute and solvent is liquid.
8. copper dissolved in gold
9.Colloids Applications
A colloid is typically a two phase system consisting of a continuous phase (the dispersion medium) and dispersed phase (the particles or emulsion droplets). The particle size of the dispersed phase typically ranges from 1 nanometer to 1 micrometer.