198828
| Pregunta | Respuesta |
| What happens in ionic bonding? | Atoms transfer (gain or lose) electrons to form positively or negatively charged atoms. |
| Which groups are most likely to from ions? | Groups 1&7 and 2&6 |
| What Group1 and 2 elements? | metals... they loose electrons and for +ve ions - CATIONS |
| What are group 6 and 7 elements? | Non-metals.... They gain electrons to form -ve ions. ANIONS |
| What diagram to you use to show what happens to the electrons in ionic bonds? | 'Dot and Cross' diagrams |
| What structure does ionic compounds? | A Regular Lattice (not lettice) |
| What are ionic compounds characteristics? | Have high melting points and boiling points... They conduct electricity when aqueous or molten. |
| What are the rules with naming compounds? (THERE ARE TWO) | 1. When two different elements combine the compound's name is 'something -IDE'. 2. When three or more different elements combine and one of them is oxygen, the compound's name is often 'something -ATE' |
| Give an example of a compound name ending in 'IDE' | Sodium + chlorine --> Sodium chloride... (ANYTHING LIKE THAT) |
| Give an example of a compound name ending in 'ATE' | Copper + sulphur + oxygen --> copper sulfATE |
| What do you use to work out the formula of an ionic compound? | You.... look at what ions they form when they react... (OR JUST SING THE VALENCY SONG!!!!) |
| What are the rules of solubility? | common salts of SODIUM, POTASSIUM and AMMONIUM = soluble NITRATES = SOLUBLE common CHLORIDES = soluble except (SILVER AND LEAD CHL...) common SULFATES = soluble except (LEAD, BARIUM AND CALCUIM SUL...) common CARBONATES and HYDROXIDES = insoluble except (SODIUM, POTASSIUM and AMMONIUM) |
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