1B 4a Studying a redox reaction

Type the missing words. Use the TAB key to move from gap to gap.
To represent a charge ion, such as Mg2+, simply type Mg2+.
If you have problems, click the Hint button at the bottom of the page to display the next letter of the missing word.

Iron wool in copper sulfate solution


pg285c.jpgSome iron wool is placed in a beaker containing copper sulfate solution.

Iron, (symbol), is a (colour) (state). The copper sulfate solution is (colour) due to the presence of (symbol and charge of ion).
pg285d.jpgAfter a few minutes the solution has changed to colour. The iron wool is coated in a (colour) (state), which is characteristic of (name of substance), (symbol).
pg285e.jpgA small amount of the liquid is withdrawn and added to a test tube containing sodium hydroxide solution.

Sodium hydroxide solution is (colour). A (colour) precipitate forms, indicating the presence of (symbol and charge of ion).

In this reaction (symbol and charge) is oxidised to (symbol and charge), while (symbol and charge) is reduced to (symbol and charge).