Grade 9 Science Exam Review - Solutions 2014 | Page 5

d) Draw the Bohr-Rutherford diagram of the magnesium ion: 17. Metals are located on the left side of the periodic table. 18. Three characteristics of alkali metals are: a) Soft b) Shiny c) React with water 19. State an example of a (n): a) alkali metal sodium b)halogen chlorine c) noble gas helium 20. For the question: Does water evaporate faster when heated? a. State the independent variable: time b. State the dependent variable: temperature Page 5 of 17