Are you hungry after all these experiments? Come on; lets make a quick, tasty cup of soup. Cooking can also teach us science.
Things Required:
2 bouillon cubes
2 cups
Hot and cold water
Directions:
Fill one cup with cold water from the faucet. Add one bouillon cube. Allow this cup to sit undisturbed while the second cup is prepared. Fill the second cup with hot water from the faucet. Add one bouillon cube to the water and stir.
This Is What Happens:
The solid cube dissolved more quickly when placed in hot water and stirred.
Science Behind It:
Dissolving means that the solute moves evenly throughout the solvent. The bouillon cube is the solute and the water the solvent. Heat causes the molecules of water to move faster; thus the water molecules hit against the cube causing pieces to break off. Stirring increases the breaking process. The cube will finally dissolve in the cold water, but it takes a much longer period of time. Stirring the cold water will help speed up the dissolving.
