U n it 8 Ch e mi cal r ea cti on s Lesson 8.1b Activity 3 ACTIVITY SHEET Reaction or reversible change practical Task 1 Task 2 1 Pour about 1 cm depth of iron(III) chloride solution into a boiling tube. 1 Pour about 2 cm depth of vinegar into a boiling tube. 2 Add the same height of sodium hydroxide solution. (Irritant) 2 Add one spatula measure of sodium hydrogen carbonate. 3 Stir. 3 Observe carefully. Task 3 Task 4 1 Pour about 5 cm depth of dilute (0.4) hydrochloric acid into a beaker. 1 Pour about 100 cm3 water into the beaker. 2 Add one teaspoonful of brown sugar. 2 Add half a spatula measure of zinc powder. 3 Stir. 3 Observe carefully. Task 5 Task 6 (Wear goggles for this task) 1 Put an ice cube on a watch glass. 1 2 Observe carefully for about 2 minutes. Pour about 3 cm depth of sodium hydroxide solution into a boiling tube. 2 Record the temperature. 3 Add the same height of dilute hydrochloric acid. 4 Stir. 5 Record the temperature again. Task 7 Task 8 1 Light the candle. 1 2 Observe carefully for about 2 minutes. Pour about 150 cm3 of water into the beaker. 3 Blow out the flame. 2 Put the beaker of water on a tripod and gauze. 3 Light the Bunsen burner. 4 Heat the water until it boils. 5 Observe carefully. 6 After the water has boiled for about 1 minute, turn off the Bunsen burner and leave the beaker of water to cool. Task 9 Task 10 1 Pour about 200 cm3 of water into the beaker. 1 Pour about 200 cm3 of water into the beaker. 2 Add one spatula measure of copper sulfate crystals. 2 Add 1 spatula measure of sodium chloride (salt). 3 Stir. 3 Stir. 4 Observe carefully. 4 Observe carefully. Reaction or reversible change practical Sheet 1 of 1 © Oxford University Press 2008 This resource sheet may have been changed from the original 343 U n it 8 Ch e mi cal r ea cti on s Lesson 8.1b Activity 3 ACTIVITY SHEET Task 1 Task 2 1 Pour about 1 cm depth of iron(III) chloride solution into a boiling tube. 1 Pour about 2 cm depth of vinegar into a boiling tube. 2 Add the same height of sodium hydroxide solution. (Irritant) 2 Add one spatula measure of sodium hydrogen carbonate. 3 Stir. 3 Observe carefully. Task 3 Task 4 1 Pour about 5 cm depth of dilute (0.4) hydrochloric acid into a beaker. 1 Pour about 100 cm3 water into the beaker. 2 Add one teaspoonful of brown sugar. 2 Add half a spatula measure of zinc powder. 3 Stir. 3 Observe carefully. Task 5 Task 6 (Wear goggles for this task) 1 Put an ice cube on a watch glass. 1 2 Observe carefully for about 2 minutes. Pour about 3 cm depth of sodium hydroxide solution into a boiling tube. 2 Record the temperature. 3 Add the same height of dilute hydrochloric acid. 4 Stir. 5 Record the temperature again. Task 7 Task 8 1 Light the candle. 1 2 Observe carefully for about 2 minutes. Pour about 150 cm3 of water into the beaker. 3 Blow out the flame. 2 Put the beaker of water on a tripod and gauze. 3 Light the Bunsen burner. 4 Heat the water until it boils. 5 Observe carefully. 6 After the water has boiled for about 1 minute, turn off the Bunsen burner and leave the beaker of water to cool. Task 9 Task 10 1 Pour about 200 cm of water into the beaker. 1 Pour about 200 cm3 of water into the beaker. 2 Add one spatula measure of copper sulfate crystals. 2 Add 1 spatula measure of sodium chloride (salt). 3 Stir. 3 Stir. 4 Observe carefully. 4 Observe carefully. 3 Sheet 2 of 1 © Oxford University Press 2008 This resource sheet may have been changed from the original 343
