# Notes: Dissolving in Solutions Density: The amount of mass in an

```Notes: Dissolving in Solutions
Density:
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The amount of mass in an amount of volume.
The amount of stuff in a space.
Units are g/mL
To calculate density, divide the mass by the volume of an object
The density of water is 1 g/mL
1 g of water takes up 1 mL of space
Law of Conservation of Mass
Matter cannot be created or destroyed
Water Dipole:
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The electrons in a water particle are concentrated around the oxygen atom
The oxygen atom in water is negatively charged and the hydrogen atoms are positively
charged
This difference in charge is called a dipole or 2 poles
The dipole attracts other particles and allows substances with charges to dissolve
Water
Dissolving
Solution:
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A solute dissolving in a solvent forms a solution
When dissolved the solute is reduced to particles spread uniformly throughout the
particles of the solvent
Dissolving depends upon the amount of kinetic energy in the solvent (the temperature)
Solution:
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The ratio of solute particles to solvent particles in solution determines concentration
The saturation point is reached when no more solute can be dissolved in solution
When something is dissolved the process is always reversible
Concentration =
Mass of Solute
Mass of Solution
X
100
Density =
Mass of Solution =
Volume of Solution
+
Mass of Solvent
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