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Java Games: Flashcards, matching, concentration, and word search. |
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unit 2 learn the chemistry
Don't be an idiot, learn this stuff.
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| A | B |
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| atomic number | number of protons |
| atomic mass | number of protons + neutrons |
| acid + alkali (or base) | neutralisation reaction |
| periodic group number | number of electrons in outer shell |
| element | made of one type of atom |
| alloy | mixture of metals |
| compound | 2 or more different atoms chemically bonded |
| melting point | temp at which solid becomes liquid |
| polymer | a long chain molecule |
| hydrocarbon | made of only hydrogen & carbon |
| solvent | liquid part of a solution |
| solute | dissolved solid in a solution |
| co-valent bond | when atoms share electron pairs |
| ionic bond | 1 atom loses electrons, other gains. |
| methane(natural gas) | CH4 |
| 0-6 | acidic pH |
| 8-14 | alkali pH |
| Li, Na, K | Gp 1 , alkali metals |
| ion | made when atom has lost/gained electrons |
| 2, 8, 8, | full outer shell configuration |
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