Grade 9 Science Chemistry Exam Review 2014 | Page 15

43. ANS: 44. ANS: 45. ANS: 46. ANS: 47. ANS: When an atom gains an electron, there are more negative charges than positive charges. Since the negative charges and positive no longer balance, the end result is a charged atom. Examples will vary but should include totalling of positive and negative charges. 15 | P a g e