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14 Cards in this Set
- Front
- Back
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Pure substance |
A substance which is made up of only one substance (can be either an element or a compound) |
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The melting and boiling point of a pure substance |
Is at a fixed point |
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A mixture has a _____ of temperatures are which it melts or boils |
Range |
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Impurities tend to _____ the melting point |
Decrease |
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Impurities tend to _____ the boiling point |
Increases |
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Formulation |
A useful mixture of substances with a fixed composition |
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Paints contain |
A pigment, binder (help paint attach to object), solvent (helps pigment and binder spread well during painting by thinning them out) |
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Washing up liquids contain |
Water, colouring and fragrance additives, surfactant (removes grease) and rinse agent (to help drain water off crockery) |
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Retention factor |
Distance moved by substance / distance moved by solute |
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When can you compare Rf values to database? |
Use the same solvent and temperature |
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Test for hydrogen |
Squeaky pop |
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Test for oxygen |
Relights a glowing splint |
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Test for carbon dioxide |
Limewater turns cloudy |
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Test for chlorine |
Damp blue litmus paper turns white |
