Because a copper ion looses electrons, meaning it's negatively charged, and positives and negatives attract.
Oil has very less density as compared to water, so they never mix through. When, you put both of them in a container, then Oil floats on the surface of water
Hope this helps!
Answer:
The rate of dissolving of a solute in a solvent is faster when the solute and solvent are stirred, the solvent is warmer, or the solute consists of smaller particles with more surface area.
Answer:
The second friend is mostly correct.
Explanation:
When pressure decreases, gas solubility decreases. The bubbles are gas molecules that were dissolved in the water at atmospheric pressure. The bubbles started coming out as a result of the decrease pressure. The second bubbles would be water vapor because as the pressure continue to decrease, the amount of vapor pressure ( vapor leaving the surface of the liquid ) equals the external pressure and water begin to boil. So the second bubbles must be water vapor.
