Question 16 (3 marks) (a) Write the word equation for potassium reacting with water forming an aqueous solution. (1 mark) potassium + water â potassium hydroxide + hydrogen (b) Write the balanced formulae equation for (a) including states/phases.(2 marks) 2K (s) + 2H 2 O (l) â 2KOH (aq) + H 2 (g) âº One mark for balanced equation + one mark for correct states.his shows that water is made up of more than one type of atom. (1 mark) âº The two substances obtained were in definite ratio of 2:1 as shown by the 2:1 ratio of the gas volumes. (1 mark) (ii) State another observation that shows that electrolysis is a chemical change.
tr.v. colÂ·latÂ·ed, colÂ·latÂ·ing, colÂ·lates. 1. To examine and compare carefully in order to note points of disagreement. 2. To assemble in proper numerical or logical sequence.
Collate is defined as putting in order. To collate on a printer, that printer must have the ability of being fed a multi-page document into a feeder, read the document into memory, then printing in either forward or reverse order. When printing sets of the document, once a set is printed, some printers will start sequential sets a little offset from the previous set to make the sets easier to separate.