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6. all reactions in which atoms/molecules/ions GAIN electrons
7. a reaction in which an element in a single species is simultaneously oxidised and reduced
- disproportionation
- reduction
- oxidation
8. the oxidation number of all uncombined elements is.......
- 0
- the same as its charge
- 1
- -1
9. oxidation makes the oxidation number of an element more.........
- positive (bigger)
- negative (smaller)
11. reducing agent
- a chemical reagent which can oxidise other atoms/molecules/ions by taking electrons away from them and being reduced themselves
- a chemical reagent which can reduce other atoms/molecules/ions by giving them electrons and being oxidised themselves
12. -ic
- the central atom has the higher oxidation number
- both elements named are the only elements in the compound
13. half equations
- an ionic equation used to describe the gain/loss or electrons during a redox reaction
- the full balanced equation of a redox reaction
14. What is the oxidation number of Sulphur in SO4^2-
15. the reaction that makes the oxidation number of an element more negative
16. in ions made of 1 ion only, the oxidation number of the element is always.......
- the same as the charge on the ion
- 0
- 1
17. reduction is _____ of electrons
18. -ide
- both elements named are the only elements in the compound
- the central atom has the higher oxidation number
19. the sum of oxidation numbers for an ion is..........
- +1
- 0
- the charge on the ion
- -1
20. a chemical reagent which can oxidise other atoms/molecules/ions by taking electrons away from them and being reduced themselves
- oxidising agents
- reducing agents