Question 56
Work in small groups.
1. Fill two beakers with 100 cm³ of water each. Measure and record the temperature of the water in each beaker.
2. Measure out 10 g of sodium hydrogen carbonate. Add it to the first beaker of water.
3. Stir the solution. Measure and record its temperature.
4. Measure out 10 g of potassium chloride. Add it to the second beaker of water.
5. Stir the solution. Measure and record its temperature.
6. What do you observe? What can you conclude about what happens when these two salts dissolve?
1. Fill two beakers with 100 cm³ of water each. Measure and record the temperature of the water in each beaker.
2. Measure out 10 g of sodium hydrogen carbonate. Add it to the first beaker of water.
3. Stir the solution. Measure and record its temperature.
4. Measure out 10 g of potassium chloride. Add it to the second beaker of water.
5. Stir the solution. Measure and record its temperature.
6. What do you observe? What can you conclude about what happens when these two salts dissolve?
