Unit 1 Review

1. Describe how everyday life depends upon technological products and processes that produce useful materials and energy. 

   • Identify examples of chemical changes involved in cooking, cleaning, personal care and  gardening (e.g., acids in vinegar, citrus fruit identify common materials and their uses,

   • Describe how everyday life has changed over the past 100 years with the development of new materials (e.g., acids, bases, alloys, plastics, ceramics, fibres, composites)

   • Identify examples of chemical changes involved in cooking, cleaning, personal care and gardening (e.g., acids in vinegar, citrus fruits and rhubarb react with aluminum kitchen utensils; bases in drain cleaners react with grease; emulsifiers and softeners are ingredients in skin creams; pesticides interfere with metabolic processes in living systems)its and rhubarb react with aluminum kitchen utensils; bases in drain cleaners react with grease; emulsifiers and softeners are ingredients in skin creams; pesticides interfere with metabolic processes in living systems)

2. Investigate and classify chemical reactions

   • Name simple compounds from chemical formulas, and recognize the chemical names of  substances that are used every day

   • Infer the relationship among chemical formulas, composition and name (e.g., simple acids, bases, salts) 

   • Investigate evidence of chemical change; i.e., change of phase, appearance, colour, odour, energy (e.g., heat, light)

   • Investigate, describe and compare the changes to reactants and products in fossil fuel combustion and rusting reactions

   • Define, operationally, endothermic and exothermic reactions (e.g., mixing chemicals in a “cold pack,” burning natural gas)

   • Investigate and describe simple composition and decomposition reactions. Ex) tarnishing of silver, electrolysis of water.

   • Abusing observation, the chemical properties of reactants and products in chemical reactions. Ex) neutralization, combustion, simple composition and decomposition.

   • Identify simple composition, decomposition, combustion and neutralization reactions when given word and or chemical equations, products, and reactants.

3. Explain the law of conservation of mass when balancing chemical equations.

   • Relate the concept of the atom to the conservation of mass; i.e., the number of atoms stays the same as they are rearranged in a chemical reaction; therefore, the total mass before and after the reaction remains the same (e.g., analyze the chemical equation 2Mg(s) + O2(g)→ 2MgO(s) to illustrate the law of conservation of mass by counting the number of atoms of each element)

   • Represent simple chemical reactions (e.g., neutralization, combustion, simple composition, decomposition) using word and/or balanced chemical equations 

4. Analyze common technological products and processes encountered in everyday life and careers, and analyze their potential effects on the environment:

   • Analyze and explain common acid–base neutralization reactions (e.g., neutralization of stomach acid by antacids, use of baking soda or baking powder, use of lemon juice on fish dishes)

   • Investigate and describe simple chemical processes occurring in everyday life (e.g., acid–base reactions in cleaning and food processing, dyeing of hair, washing of clothes, burning of gasoline in a car engine, swimming pool maintenance, rusting of metal)

   • Provide examples of how technology has addressed the problem of corrosion (e.g., protecting with paint, oil, plastic or metal; using alloys or sacrificial metals)

   • Investigate and describe greenhouse gasses and air pollution resulting from combustion reactions (e.g., carbon dioxide and carbon monoxide released when methane is burned in a household furnace, sulfur dioxide and nitrogen dioxide released in car exhaust)

   • Investigate and describe technologies used to reduce emissions that cause acid deposition

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