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table or flat area. (1) (2) 4 (2) (2) vinegar to the bicarbonate of soda and leave the glas 3. Immediately place the thermometer in the solution of vinegar and bicarbonate of soda and take the temperature reading. 4. Stir the mixture with the thermometer until the reaction is completed then take the temperature reading again. 3 Write down observation made on the reaction between the vinegar and the bicarbonate of soda in Part A. mouth of the glass/cup/glass beaker as the reaction continues. What happened to the birthday candle /matchstick when you held it at the 5 Compare the temperature reading in Part B at the beginning and at the end of SECTION D: ANALYSE THE RESULTS AND DRAW CONCLUSIONS 1. bicarbonate of soda. Explain the observations made on the reaction between the vinegar and the Explain the observations made on the burning birthday candle or matchstick. 3. From observation made on the thermometer reading in Part B, what conclusion can you make about the type of a reaction between vinegar and bicarbonate of soda. Is it ENDOTHERMIC or EXOTHERMIC? the reaction. (2) (2) 2. (1) SECTION E: QUESTIONS ( 1) 1. What is the reaction of an acid with a base called? in action hetween Vinegar and 2 Writo di (2)
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