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.
Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  parallel, collimate(verb) make or place parallel to something. They paralleled the ditch to the highway. 2  collimate(verb) adjust the line of sight of (an optical instrument) collimate(Verb) To focus into a narrow beam or column. Collimate(verb) to render parallel to a certain line or direction; to bring into the same line, as the axes of telescopes, etc.; to render parallel, as rays of light.