GenChem LongTest

• Solutions are homogeneous mixtures.
• Solution may have more than one solute and only one solvent.
• Solutions have uniform composition all throughout.
• Homogeneous. Consisting of parts all of the same kind
• Homogeneous. Uniform, evenly distributed
• Homogeneous. Parts mix evenly
• Homogeneous. Parts never separate
• Heterogeneous. Parts do not mix evenly
• Heterogeneous. Parts eventually separated
• Solute. Substance that is dissolving
• Solvent. Substance that dissolves the solute
• Water is considered the solvent, even when it’s not present in the greatest amount.
• Aqueous Solution. Solution which water as a solvent
• Water is the most common solvent in chemistry
• Air. 78% Nitrogen, 21% Oxygen, 1% Carbon Dioxide Water, Argon, Others.
• Alloy. Homogeneous mixture or solution of metals
• Copper + Tin = Bronze
• Iron + Carbon (non-metal) + other metals = Steel
• Dilute – less solute
• Concentrated – more solute
• Solubility. Is defined as the maximum amount of substance (solute) that will dissolve in a solvent at that temperature.
• Solubility. Usually measured by g/L
• Unsaturated Solution. More solute dissolves
• Saturated Solution. No more solute dissolves
• Supersaturated Solution. Becomes unstable, crystals form
• Percentage by mass = mass of solute/mass of solution × 100
• Percentage by volume = volume of solute/volume of solution × 100
• Molality = moles of solute/kg of solvent × 100
• Molarity = moles of solute/L of solution × 100
• Molarity "M"
• Molality "m"
• Mass/Volume Percent = mass of solute/volume of solution x 100