105221
Descripción
Fichas por katiehumphrey, actualizado hace más de 1 año
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Creado por katiehumphrey
hace más de 11 años
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| Pregunta | Respuesta |
| Atom proton +1 nucleus neutron 0 nucleus electron -1 orbit |
Image:
c-atom_e.gif (image/gif)
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| Element | made up of one type of atom He helium |
| Compound | a molecule made up of atoms of 2 or more different elements H20 water |
| Mixture | 2 or more atoms/molecules mixed together but not chemically bonded |
| Atoms | smallest amount of a substance that we can have that will still retain all the features of that substance |
| Molecules | 2 or more atoms joined together through attractive forces known as bonds the atoms may be of the same or different elements |
| Atomic structure | number of protons in an atom of an element = atomic number protons + neutrons in an atom = mass number protons = electrons |
| Ionic bonding |
Image:
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| Covalent bonding | |
| Metals | metals come from the earth's crust some metals are very unreactive and are found as elements in their native state metals like zinc, iron, lead are found combined with oxygen in compounds these metals can be extracted using chemical reactions |
| Metal ores | oxidation reduction electrolysis displacement |
| Blast furnace | |
| Electrolysis | |
| Alkane formula |
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| Alkanes |
Image:
organic1.gif (image/gif)
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| Properties of alkanes | larger alkane molecule: less volatile higher bioling point less flammable higher viscosity |
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