Purity and Formulations
Purity and Formulations
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In everyday life, a pure substance can mean a substance that has had NOTHING ADDED to it, so it is UNADULTERATED and in its natural state, e.g. pure milk.
In Chemistry, a pure substance is a single element or compound, NOT mixed with any other substance.
You can tell whether a substance is pure or not by checking its MELTING or BOILING POINT.
Pure substances will always have a specific melting or boiling point, so if a substance deviates from the known boiling points, there are IMPURITIES present.
For example, SAMPLE 2 would be the PUREST out of the 4 samples, as it has the closest boiling point to PURE water.
A formulation is a mixture that has been carefully designed as a USEFUL PRODUCT. These are complex mixtures in which EACH CHEMICAL has a particular PURPOSE.
For example in PAINT, the components mixed together include:
PIGMENT: Provides the color.
BINDER: Creates a film to HOLD the pigment in place.
SOLVENT: DISSOLVES the components and alters the VISCOSITY.
Another example would be in TABLETS, which would have many important components such as the active ingredient, binders and coatings.
Formulations are made by mixing the components in carefully MEASURED quantities to ensure that the product has the required properties.
Other examples of formulations found in everyday products include:
FUELS, CLEANING AGENTS, PAINTS, MEDICINES, ALLOYS, FERTILISERS, and FOODS.
In everyday life, a pure substance can mean a substance that has had NOTHING ADDED to it, so it is UNADULTERATED and in its natural state, e.g. pure milk.
In Chemistry, a pure substance is a single element or compound, NOT mixed with any other substance.
You can tell whether a substance is pure or not by checking its MELTING or BOILING POINT.
Pure substances will always have a specific melting or boiling point, so if a substance deviates from the known boiling points, there are IMPURITIES present.
For example, SAMPLE 2 would be the PUREST out of the 4 samples, as it has the closest boiling point to PURE water.
A formulation is a mixture that has been carefully designed as a USEFUL PRODUCT. These are complex mixtures in which EACH CHEMICAL has a particular PURPOSE.
For example in PAINT, the components mixed together include:
PIGMENT: Provides the color.
BINDER: Creates a film to HOLD the pigment in place.
SOLVENT: DISSOLVES the components and alters the VISCOSITY.
Another example would be in TABLETS, which would have many important components such as the active ingredient, binders and coatings.
Formulations are made by mixing the components in carefully MEASURED quantities to ensure that the product has the required properties.
Other examples of formulations found in everyday products include:
FUELS, CLEANING AGENTS, PAINTS, MEDICINES, ALLOYS, FERTILISERS, and FOODS.
