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14 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Definition of a mixture & how to identify it |
1. Made up of 2 or more substances that are not chemically combined 2. Melts and boils over a range of temperature |
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Definition of a substance & how to identify it |
1. It is a single substance. 2. It has fixed melting and boiling points. |
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Types of techniques to separate solid from liquid.(state definition, steps*) |
1) Filtration - used to separate insoluble solid particles from a liquid 1. filter paper 2. fulter funnel 3. conical flask 4. residue 5. filtrate
2) Evaporation to dryness - used to obtain a soluble solid from a solution 3) Crystallisation- used to obtain a pure solid from its solution 1. Dissolve mixture into water 2. Heat up until saturated 3. Cool it and crystals of pure substance will form in the substance
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*if needed FEC |
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Types of techniques to separate solids(definition & steps on how to use it) |
1. Sublimation - used to separate a solid that sublimes - a solid that changes directly to gas 2. Magnetism - used to separate a magnetic substance from a non-magnetic substance |
SM |
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Types of techniques to separate a liquid from a solution |
1) Simple Distillation - separate a pure solvent from a solution |
S |
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Types of techniques to separate liquids (definition & how to work it) |
1) Separating Funnel - separate immiscible liquids 2) Fractional Distillation - used to separate a mixture of miscible liquids with different boiling points |
SF |
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Chromatography- definition |
Using a solvent to separate a liquid mixture into its components |
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Chromatography- factor affecting solubility of a component and its relationship |
^ soluble, ^ distance |
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Chromatography- What does it mean if only one spot appear? |
The substance is pure. |
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Chromatography- Formula |
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Chromatography- What if the substance that is tested is colourless? |
Locating agents can be used to react with colourless substances to form coloured spots. |
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Chromatography- If the dot on the line does not disappear, what does that mean? |
There are other components in the solvent that are insoluble. |
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Techniques to collect gas(which is what for) |
1. Displacement of water - insoluble in water 2. Downward delivery - soluble in water & denser in air 3. Upward delivery - soluble in water & less dense in air |
DDU |
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Techniques to dry gas(which is what for) |
1. Concentrated sulfuric acid - dry most gases including Cl and HCl - except ammonia(coz it reacts with it) 2. Quicklime(calcium oxide) - dry ammonia only 3. Fused calcium chloride - dry most gases |
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