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Chemistry
Materials Science
Materials come in what two forms? | Pure substances or mixtures |
What happens when a material is mixed with another material? | Gains particular different physical properties |
What are alloys? | Two or more different metals mixed together or a metal mixed with a small quantity of a non metal |
What are composite materials? | Made from two or more different materials |
What are separation techniques based on and what are some examples? | Seperation techniques are based off different physical and chemical properties, these include: Size, Density, Solubility, Electricity, Distillation |
What features do nano-materials hold? | Nanoscale features |
What size are nano materials? | 1-100nm diameter |
Properties of nano materials vary from the ... | Bulk |
What three things are nano materials able to do? | Adsorb, Transport molecules, Act as catalysts in some chemical reactions |
What can nano materials do thats dangerous to humans? | Travel through air, skin, and even cells via the bloodstream |
When is separation by size used? | Solid and a liquid preferably |
When is separation by density used? | Two immiscible liquids or a liquid and a solid |
When is separation by solubility used? | Two solids, add water |
When is distillation or fractional distillation used? | Two liquids, similar bp, fractional comes out in fractions. |
When is separation by electricity used? | Charged materials or magnetic elements |