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14 Cards in this Set
- Front
- Back
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Elememt |
A substance that only contains 1 sort of atom |
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Compound |
Atoms of 2 or more elements, that are chemically bonded in fixed proportions |
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Reactants |
The substances that react (left side of equation) |
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Atom |
The smallest part of an element that can exist |
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Products |
The new substances that are formed (right side of equation) |
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Mixtures |
2 or more elements or compounds that aren't chemically combined |
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Filtration |
Separates soluble solids or liquids from insoluble solids |
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Crystalisation |
Used to obtain a soluble solid from a solution. 1) the mixture is gently warmed 2) the water evaporates leaving crystals of pure salt |
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Simple distillation |
Used to obtain a solvent from a solution |
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Fractional distillation |
Used to obtain separate mixtured where the components have different boiling points |
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Chromatography |
Used to separate the different soluble,coloured component of a mixture |
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Subatomic particlez |
Electron- mass (negligible) charge (-1) orbits around the nucleus in energy shells; protons- mass (1) charge (+1) in nucleus of atom (atomic number); neutrons- mass (1) charge (0) in nucleus of atom (mass number- atomic number) |
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Isotope |
A form of an element with the same amount of protons but different number of neutrons |
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Ion |
Atoms that have lost or gained electrons and gained a charge due to the imbalance of protons and electrons that are usually equal |
