Page 79 - The Ontario Curriculum, Grades 9 and 10: Science, 2008 (revised)

c2.5 plan and conduct an inquiry to identify the evidence of chemical change (e.g., the forma- tion of a gas or precipitate, a change in colour or odour, a change in temperature) [IP, PR, AI]
c2.6 plan and conduct an inquiry to classify some common substances as acidic, basic, or neutral (e.g., use acid–base indicators or pH test strips to classify common household substances) [IP, PR, AI]
C. Understanding Basic Concepts
By the end of this course, students will:
c3.1 describe the relationships between chemical formulae, composition, and names of binary compounds (e.g., carbon dioxide, CO2, has two oxygen atoms and one carbon atom)
c3.2 explain, using the law of conservation of mass and atomic theory, the rationale for bal- ancing chemical equations
c3.3 describe the types of evidence that indicate chemical change (e.g., changes in colour, the production of a gas, the formation of a precipi- tate, the production or absorption of heat, the production of light)
c3.4 write word equations and balanced chemical equations for simple chemical reactions (e.g., 2H2 + O2 ➞ 2H2O)
c3.5 describe, on the basis of observation, the react- ants in and products of a variety of chemical reactions, including synthesis, decomposition, and displacement reactions (e.g., reactions occur- ring when magnesium burns or in the production of oxygen from hydrogen peroxide; the reaction of iron and copper sulphate; reactions occurring when fossil fuels burn)
c3.6 describe the process of acid–base neutraliza- tion (i.e., an acid reacts with a base to form a salt and often water)
c3.7 describe how the pH scale is used to classify solutions as acidic, basic, or neutral (e.g., a solu- tion with a pH of 1 is highly acidic; a solution with a pH of 7 is neutral)
c3.8 identify simple ionic compounds (e.g., NaCl), simple compounds involving polyatomic ions (e.g., KNO3 , NaOH), molecular compounds (e.g., CO2 , H2O, NH3), and acids (e.g., HCl(aq), H2SO4(aq)), using the periodic table and a list of the most com- mon polyatomic ions (e.g., OH–, SO-2), and write the formulae 4
CHEMISTRY: CHEMICAL REACTIONS

Science
SNC2D